Quality of Life/Outcomes Research

Objectives:

The longer-term clinical outcomes of patients using emicizumab in real world settings are not well documented. This study examined hemophilia patient clinical outcomes, specifically bleed rate, emergency room visits/hospitalizations, nurse resource use, adherence and emicizumab wastage in the 6 months before and after initiating emicizumab.

Methods:

This is a retrospective cohort study of patients in the United States who received an emicizumab prescription between July 1, 2018 and July 1, 2019 from a single specialty pharmacy. Patients with moderate (1% to 5% factor activity) to severe (<1% factor activity) hemophilia were included if they took emicizumab for at least 6 months and had 6 months prior use of a prophylactic factor product. Self-reported bleeds, emergency room visits, hospital admissions and nurse visits (a visit by a nurse to provide administration, education and/or infusion of the drug) were obtained from the patient’s electronic medical record. Medication adherence was assessed by calculating proportion of days covered (PDC) (the number of days in period treated divided by number of days in period) using medication dispense date and quantity from the pharmacy dispensing system. Paired Wilcoxon signed-rank and McNemar’s tests were used to assess changes in outcomes. A one-way ANOVA was used to compare emicizumab waste (the amount of drug (mg) not used per month, across the 6 months after initiating emicizumab).

Summary:

The median participant age was 15 years (range 3-53) (N=35); all were male. After initiating emicizumab, patients reported 55% fewer bleeds (m=2.9 vs. 1.3; p=0.001), 83% fewer nurse visits (m=15.5 vs. 2.8; p=0.01) and 15% greater medication adherence (m=0.84 vs. 0.97; p=0.04). When stratifying by age, the reduction in nurse visits was only significant among patients under age 18 (p = 0.01) and the increase in medication adherence was only significant among adults 18+ (p=0.01). There was no difference in emergency room/hospital visits after initiating emicizumab (m=0.40 vs. 0.23; p = 0.4). Most patients (51.4%) reported emicizumab wastage in the first month. After the initial loading dose (month 1), there was a decreasing proportion of emicizumab waste across months 2-6, though comparisons were not statistically significant (13.8%, 13.3%, 12.1%. 12.4% and 10.9%; p>0.6). Although the intent was not to assess cost savings, our study did find a 9.1% savings in drug cost over the course of one year, when comparing factor utilization pre-emicizumab.

Conclusions:

In this study, taking emicizumab was associated with a significant reduction in bleeds and nursing visits which may reduce operational costs and increase medication adherence. No significant change in emergency room/hospital visits were observed. Future prospective studies with larger samples and a control group are needed to assess long-term clinical outcomes, health-related quality of life, and total cost and quality of care among patients using emicizumab.   

Introduction/Background:

Maintenance of oral health is frequently challenging for US adults with a bleeding disorder. Underlying causes are due mainly to (1) lack of dental insurance and (2) lack of knowledge among dentists about how to perform safely either primary dental care or oral surgery. Without regular care, patients are at risk for advanced dental disease, which is associated with chronic inflammatory conditions, including type 2 diabetes and cardiovascular disease. Research indicates that controlling periodontal disease reduces inflammatory markers throughout the body, including synovial joints.

Materials and Methods:

The Gulf States Hemophilia and Thrombophilia Center (GSHTC) in Houston, Texas serves a diverse urban population; historically, about 50% of adult patients receive no dental care. In October 2019, GSHTC added adult dental exams to comprehensive care services. Patients are evaluated by University of Texas School of Dentistry residents and scheduled for routine or specialized dental procedures as needed. To assess the scope of dental needs in the GSHTC patient population, we examined the range of procedures recommended and the proportion of patients reporting oral health care problems. We report here preliminary results from the initial six months of adult dental services, October 2019 – March 2020. 

Results:

In this period, 171 adults with a bleeding disorder received dental evaluations, and 146 completed the Oral Health Impact Profile (OHIP-14). The OHIP-14 is a validated survey instrument consisting of 14 questions measuring seven dimensions of oral health: functional limitation, physical pain, psychological discomfort, physical disability, psychological disability, social disability and handicap. Responses are rated on a 5-point Likert scale: 0=never, 1=hardly ever; 2=occasionally, 3=fairly often; 4=very often/every day. Total OHIP-14 scores can range from 0 to 56 and are calculated by summing the values for the 14 items. Higher scores indicate worse and lower scores indicate better health-related quality of life (HRQoL). Scores ranges from 0-52; 80 (55%) individuals had a score of 0-1 (no oral health problems); 48 (33%) scored between 2-9, and 18 (12%) had scores of 10 or greater. Since October 2019, nearly all adult patients seen in clinic have received a dental evaluation; approximately 40 patients in need of dental care have received treatment or a treatment plan. Procedures include deep cleaning, regular/surgical extractions, fillings, scaling, root planing, crowns, bridges and root canal, all of which require infusion of factor concentrate prior to treatment.

Conclusion:

A substantial proportion of patients who completed the OHIP-14 reported reduced HRQoL related to poor oral health; subsequent dental examination confirmed the urgent need for treatment in these individuals. Continued administration of the OHIP-14 will monitor the impact of dental treatment on patient HRQoL. Ultimately, we hope to provide evidence of the need for widespread inclusion of adult dental care among US Hemophilia Treatment Centers.

Background:

Von Willebrand disease (VWD) is an inherited bleeding disorder caused by a quantitative or qualitative deficiency of the protein, von Willebrand factor (VWF). There is a lack of clear guidance on best practices to inform the care of people with VWD.

Objectives:

Identify and prioritize the main topics of a collaborative guideline development effort.

Methods:

A scoping survey to prioritize topics to be addressed in a collaborative guideline for VWD was distributed to international stakeholders including patients, caregivers, clinicians, and allied healthcare professionals. The distribution strategy was coordinated by the guideline chairs and representatives of the American Society of Hematology (ASH), the International Society on Thrombosis and Haemostasis (ISTH), the National Hemophilia Foundation (NHF), and the World Federation of Hemophilia (WFH). The survey was conducted in English, French, and Spanish. The survey focused on both diagnosis and management of VWD, using 7-point Likert-scale response options and open ended comments. Descriptive analysis of participants and comparative analysis of results by stakeholder subtype (patients/caregivers versus healthcare providers [HCP]), gender, and income setting was performed. Qualitative conventional content data was analyzed utilizing both deductive and inductive coding processes.

Results:

601 participants responded to the survey (49% patients/caregivers, and 51% HCPs). The highest priority topics identified were diagnostic criteria/classification, bleeding assessment tools, treatment options for women, and surgical patients. In contrast, screening for anemia and plasma-derived therapy versus recombinant therapies were rated the lowest priority topics (figures 1 – 2).

Conclusion:

The survey results highlighted areas of importance in the diagnosis and management of VWD across diverse groups of stakeholders and will direct future guideline efforts. The large number responses (601) and discrete comments (9,500) attest to the interest and involvement of the VWD community in this effort.
 

Objective:

While a new generation of therapies for patients with Hemophilia A are available, it is unclear what patient characteristics, perceptions, and barriers are associated with the decision to switch FVIII replacement therapies. This study assessed patient characteristics, health history, and reasons for switching from a FVIII product with more frequent dosing (³3x infusions/week) to a product with less frequent dosing (≤2x infusions/week) from patient/caregiver and physician perspectives.

Methods:

Data collection was a mix of qualitative and quantitative procedures. The qualitative portion consisted of two online discussion forums: patients (n=17) and caregivers of patients (n=11) receiving a FVIII product dosed ³3x/week, and patients (n=22) and caregivers of patients (n=5) who switched to a product dosed ≤2x/week. The quantitative portion was a retrospective medical chart review (n=207) which captured variables (e.g., bleed rate, treatment history) 6 months pre- and 6 months post-switching to a product with less frequent dosing.

Summary:

Prominent drivers among patients for starting a FVIII product with less frequent dosing included: 1) experiencing diminished effectiveness while on a product dosed ³3x/week resulting in increased breakthrough bleeding, 2) experiencing vein access issues, and 3) beginning prophylaxis as opposed to on-demand infusions after a bleed.

Key barriers to changing included: 1) fears regarding the process of switching being complicated, time consuming, and costly, 2) perceived risks associated with switching, and, 3) possible lack of healthcare provider support.

Physicians were most likely to report that patients switched products because they sought a newer product with twice weekly dosing or less per FDA-approved dosing recommendations (35.3%), followed by patient requested the switch (30.4%), and patient sought a reduction in infusion frequency to improve adherence (27.5%).

Switching to a product with less frequent dosing was associated with improvements in patient-reported bleeding-related outcomes. Patients were more likely to self-administer the treatment post-switch (63.8%) compared with pre-switch (48.8%; p<0.001) and had fewer infusions per week post-switch (2.8 vs. 3.3; p<0.001). Patients’ annualized bleed rate was lower (5.9) post-switch compared with pre-switch (7.7; p<0.001).

Both the number of spontaneous joint bleeds and joint bleeds after trauma or injury were lower (3.2 and 2.7) post-switch (3.6 and 4.3; p=0.044 and p<0.001). The bleeding event was less likely to be classified as moderate or severe (34.5% and 5.9%) post-switch compared with pre-switch (55.0% and 10.0%; p<0.001 and p=0.049). Fewer infusions were required to resolve the bleeding event post-switch (2.6 vs. 3.2; p<0.001).

Conclusion:

A prominent reason why patients switch treatment is to improve bleeding-related outcomes. Indeed, we found that switching to a FVIII product with less frequent dosing was associated with improved patient-reported bleeding-related outcomes. These findings are critical for improving patient outcomes and support the FDA mandate to incorporate patient perspectives in the regulatory process.

Helping teens with bleeding disorders prepare to manage their care as they transition to adulthood is a national priority for US Hemophilia Treatment Centers (HTC).  The National HTC Patient Satisfaction Surveys (PSS) reveal high satisfaction with HTC teen transition services. Yet how satisfaction differs comparing HTCs that primarily care for children to HTCs that care for patients throughout the lifespan is unknown.

Objective:

To assess variation in patient satisfaction with US HTC teen transition services by HTC type.

Methods:

The US HTC Network conducted nationally uniform patient satisfaction surveys in 2015 and 2018 on care received, respectively, in 2014 and 2017. A Regional workgroup devised, piloted, and finalized an electronic, two-page survey for self-administration at clinic, or at home, in English or Spanish. Participation was voluntary.  Respondents were anonymous but identified their HTC. Parents completed surveys for children under age 18. The PSS included two teen transition questions for respondents age 12-17 to complete. HTC type was categorized as ‘pediatric’ if >80% of responses were from patients/caregivers of individuals under age 18, and ‘adult’ if >80% were from patients over age 24.  All other HTCs were categorized as ‘lifespan’.  For both years, approximately 26% of HTCs were classified as pediatric, 52% as life-span, and 22% as adult.

Results:

Over 700 teens age 12-17 (or their parents/guardians) from an average of 130 HTCs (94.0%) from all US regions participated in 2015 and 2018. Approximately 96.5% of teens at pediatric HTCs (96.4% - 96.5%) and 96.2% at lifespan HTCs (95.9% - 96.5%) reported being ‘always’ or ‘usually’ (A/U) satisfied with HTC services overall.  On average, 90.4% of teens at pediatric HTCs (90.1% - 90.7%) and 91.0% at lifespan HTCs (90.3%–91.6%) reported being A/U satisfied with how HTC clinic staff talked about how to care for the bleeding disorder as they became an adult. Similarly, 92.5% (92.0%– 92.9%) of teens at pediatric HTCs and 92.5% (92.3%-92.7%) reported being A/U satisfied with how the HTC clinic staff encouraged them to become more independent in managing their bleeding disorder. 

Conclusions:

HTC patients age 12-17 years consistently report very high levels of satisfaction with HTC teen transition services, regardless if the HTC primarily cares for patients up to age 17, or throughout the life-span.  This suggests teens receive support and tools to successfully transition to adult care across the US HTC Network.  A national uniform HTC Patient Satisfaction Survey provides vital information, is feasible to conduct using a regional structure, and well received nationwide.
 

Objective:

Hemophilia may negatively impact a patient’s health utility and quality of life (QoL). Health state utility values (HSUVs) and QoL are important inputs to the evaluation of novel treatment being developed in hemophilia, including gene therapies. This systematic literature review identified and evaluated HSUVs and QoL for people with hemophilia (PWH) type A and/or type B, as well as utility decrements relevant to the experience of PWH, by treatment and health state.

Methods:

Building on a review undertaken in 2014 (Grosse et al. 2015), we conducted a systematic literature review to March 2019 through a search of electronic medical databases, including MEDLINE®, Web of Science, Cochrane Library databases and the School of Health and Related Research Health Utilities Database (SCHARRHUD). Major clinical, patient, and pharmacoeconomic conferences in 2016-2019 were also queried. Studies were independently double screened by independent reviewers, after which data extraction was performed.  The information extracted included study design, description of treatment and health state, respondent details, instrument and tariff, HSUV and QoL estimates, quality of study, and appropriateness for use in economic evaluations of novel treatment.

Summary:

Of 1,511 titles and abstracts screened, 20 studies and 12 conference abstracts were included. The studies identified applied a mix of direct and indirect health utility elicitation techniques. Two studies applied direct time trade-off (TTO) methodology and the remaining 30 studies adopted indirect valuation methodologies. HSUVs were found to decrease with increasing disease severity. For example, in Hoxer et al. (2018), mean (standard deviation) HSUV were 0.80 (0.21), 0.73 (0.22) and 0.67 (0.25) in people with mild, moderate, and severe hemophilia, respectively.

Utility values were also found to vary by severity of musculoskeletal damage, frequency of bleed episodes, inhibitors, hemophilia subtype, treatment regimen, treatment adherence and other disease-related complications. Interestingly, HSUVs derived from valuations from the general public were found to be valued lower than those derived from PWH for similar health states. For example, in Carlsson et al. (2017), general population participants consistently rated significantly lower HSUVs for hemophilia disease states compared to PWH (range: 0.54-0.60 vs. 0.67-0.73).

Several hemophilia-specific QoL instruments were used alongside HSUV evaluations. These QoL findings further contribute to improving the understanding of the impact of hemophilia on PWH.

Conclusions:

This systematic review shows significant impact of hemophilia on health utilities and QoL among PWH. The substantial humanistic burden experienced by PWH highlights unmet needs remaining in hemophilia. Our review findings also suggest potential disease state adaptation among PWH, which warrants further research using robust patient preference studies.
 

Objective:

The impact of hemophilia on working life, the ability to pursue a desired career or sustain full employment have been previously reported. The aim of this analysis was to seek a better understanding of hemophilia-related health problems likely to impact employment.

Methods:

The analysis utilized data from the Patient Reported Outcomes Burdens and Experience (PROBE) study. Participants selected from among 7 possible responses (working full-time, working part-time, student full-time, student part-time, long-term disability, early retirement and other (e.g., unemployed, parental leave, retired)) to describe their current employment or school status. People with severe hemophilia A and B (PwSH) and controls with no bleeding disorder (NoBD) were compared for the proportion (percentage) reporting either working part-time due to their health or having retired early due to their health, the proportion reporting working full-time. Descriptive statistics were used to present the results as n (%), and odds ratio (95% CI) were calculated for the associations and assessed for their statistical significance.

Summary:

Data from 1009 participants (550 PwSH, 458 NoBD) ≥age 18 from 21 countries was analyzed. Mean age of participants was 39 (14.4 SD) for PwSH and 45.3 (13.7 SD) for NoBD. 250 PwSH (45.5%) and 263 NoBD (57.4%) reported working full time; 86 PwSH (15.6%) and 80 NoBD (17.5%) reported working part-time. 27 of the 86 PwSH (31.4%) and 3 of the 80 NoBD (3.8%) reported working part-time due to health. 52 PwSH (9.5%) and 28 NoBD (6.1%) reported taking early retirement. 25 of the 52 PwSH (48.1%) and 1 of the 28 NoBD (3.6%) reported taking early retirement due to health. Analysis of the association between reporting a health-related problem and reporting to be working part-time or taking early retirement due to health include [odds ratio (95% CI), positive numbers indicating #times higher chance of being part-time/retired early]: use of mobility aids 77.7 (3.8-1645), acute or chronic pain 41.2 (2-831.8), use of pain medication 23 (2.05-258.1), participants with any health problems 22.5 (2-252.6), chronic pain 16.5 (1.5-179.2), difficulties with activities of daily living 16.5 (1.5-179.2), and history of joint surgery 7.3 (0.4-148).

Conclusion:

PwSH are more likely to report working part-time or having taken early retirement due to health-related problems than people with NoBD. Among the study population, we find a significant negative impact of hemophilia on employment status. PwSH is associated with a higher rate of working part-time or retiring early due to health than age-matched controls. Use of mobility aids, acute and chronic pain, difficulties with activities of daily living and history of joint surgery are associated with working part-time or retiring early.

Objective:

We conducted a pilot study using a single open-ended question to elicit patient-perceived challenges and management strategies in individuals with bleeding disorders. The de-identified responses and themes expressed in this study were analyzed. The identification of perceived challenges and management strategies in individuals with bleeding disorders offers the opportunity to improve value based care.

Methods:

This retrospective, cross-sectional cohort study used a sample of convenience at The Hemophilia Center at OHSU. Study population included 20 participants. Inclusion criteria included: ages seven to eighty nine, diagnosed with a bleeding disorder and seen during any outpatient Hemophilia Center clinic visit between March 1, 2017 and April 30, 2018. Participants were included if, during the course of their clinical care, they answered the question, “What is the most significant (or greatest) challenge you have in managing your bleeding disorder and what do you do about it?” Data extracted included question response, age, type and severity of bleeding disorder. Responses were analyzed for themes by the investigators and using qualitative data analysis software. Coded demographic data was correlated.

Summary:

Seven challenge themes were identified: activity restrictions, infusions, emotion/stress, pain, future plans, education and access. Management themes included: self-advocacy, parent directed, activity modification or avoidance, acceptance, inquiry, asking for assistance, planning ahead, resiliency, and peer supports. Younger participants’ (9-17 years) challenges included activity restriction and infusions with management strategies of self-advocacy, activity avoidance and modification. Participants aged 18-57 years highlighted challenges with access to care, infusions, emotion/stress, pain, education and future planning. Management strategies in this group were focused on acceptance, planning ahead, peer support and resiliency. Analysis based on severity of bleeding disorder revealed that subjects with severe hemophilia reported infusions and activity restriction as their most significant challenge, with self-advocacy and activity modification management strategies. Participants with moderate hemophilia reported challenges centered on activity restriction and education of peers, with management strategies being self-advocacy and planning ahead. There were no differences in themes identified when analyzed based on type of bleeding disorder.

Conclusions:

This study characterizes the unique challenges and management strategies described by individuals with bleeding disorders. The themes highlighted the importance of patient voice and can be used to inform individual care decisions.

Objective:

Patient satisfaction with healthcare services is a measure of patient centeredness, influences treatment adherence, and increasingly affects reimbursement. In 2018, the US Hemophilia Treatment Center Network (USHTCN) launched the second national Patient Satisfaction Survey (PSS).

Methods:

A Steering Committee and Regional HTC Coordinator work group updated, piloted, and finalized the two-page survey for patient self-administration online, at clinic, or at home, in English or Spanish, and mailed to households. Survey content and format were based on national health surveys to enhance comparability and scientific robustness. Questions included assessed patient demographics, satisfaction with team members, and care processes aligned with HRSA goals. An open ended question sought qualitative data. Respondents were anonymous but the HTC where they received care was identified. Participation was voluntary. Persons with genetic bleeding disorders who had HTC contact in 2017 were eligible. Since March 2018, HTCs sent surveys to approximately 31,650 households. Parents were asked to complete surveys for children under age 15. No reminders were sent. Data were entered and analyzed at a central site and aggregated at national, regional and HTC levels. Survey remains open through summer 2018.

Results:

4042 individuals (12.8%) from 125 (90%) of the 139 Centers in the USHTCN returned surveys by June 12, 2018. National analyses on 4042 surveys reveal that 93% - 98% were ‘always’ or ‘usually’ satisfied with HTC care processes: shared decision making (97%); care coordination (97%); obtaining understandable information (97%); getting timely services (95%); enough time with staff (97%); being treated respectfully (98%); and HTC Factor Program/Pharmacy (340b) (96%). 95% - 97% were ‘always’ or ‘usually’ satisfied with core HTC team members. 91% of 12-17 year olds were ‘always’ or ‘usually’ satisfied with HTC encouragement regarding becoming more independent, and 92% with how the HTC discussed caring for a bleeding disorder upon reaching adulthood. Insurance and language were ‘always’ or ‘usually’ a problem for 14% and 9% respectively. 31% of respondents were female and 10% Hispanic. 80% were Caucasian, 5% African-American, 4% Asian/Pacific Islander or Native Hawaiian, 4% Multiple races, and 7% did not respond. Over 60% had severe or moderate FVIII or FIX deficiency or VWD Type 3. Ages ranged from newborns to over 90 years: 37% under 18, 18% age 18 – 34, and 45% over age 35.

Conclusions:

Implementing a National Patient Satisfaction Survey for the USHTCN remains feasible, is supported by HTCs nationally, and provides valuable information. Satisfaction with HTC services including 340B pharmacy is high. Insurance and language pose problems for 9-14%. Future analyses will examine additional national data and regional variation, and identify trends from the first national PSS conducted in 2014.

Objective:

Functional impairment from recurrent joint bleeding in people with hemophilia results in joint pain and reduces quality of life. The P-FiQ study formally evaluated patient- and site-reported functional assessment including responses to generic and hemophilia-specific patient-reported outcomes (PROs) tools. Psychometric analyses were used to evaluate reliability, validity, and consistency of responses.

Methods:

Adult males with hemophilia and a history of joint pain or bleeding completed a hemophilia history and 5 PROs assessing function: EQ-5D-5L, Brief Pain Inventory v2 Short Form (BPI), International Physical Activity Questionnaire (IPAQ), Short Form-36 v2 (SF-36v2), and Hemophilia Activities List (HAL). PROs were assessed for reliability, consistency, and correlation, with factors including patient-reported characteristics.

Summary:

A total of 381 adults (median age, 34 years; range, 18-86 years) were enrolled in P-FiQ. Most participants (66%) and sites (59%) reported functional disability in the past 6 months (CDC-UDC scale). Patients self-reported arthritis/bone/joint problems (65%) and history of joint procedures or surgeries (50%). On EQ-5D-5L, most reported problems “today” with mobility (61%) and usual activities (53%) but fewer with self-care (19%). On BPI, similar median pain interference scores (0- 10 scale, 10 is complete interference) were reported with general activity (3.0), walking ability (3.0), and normal work (3.0). On IPAQ, physical activity was reported by 49% of respondents over the prior week, with more reporting walking (35%) than moderate (16%) or vigorous (16%) activities. On SF-36v2, activities in the past 4 weeks that were most frequently limited were vigorous activities (80%), bending, kneeling, or stooping (67%), walking more than a mile (61%), and climbing several flights of stairs (59%). Physical problems caused participants to limit kinds of work/activities (69%), accomplish less than they would like (66%), have difficulty in performing work/activities (65%), and reduce time spent on work/activities (62%). On HAL, greater difficulties were seen for lower vs upper extremity functions/activities; within the lying/sitting/kneeling/standing domain, the most frequent problems in the previous month were squatting for a long time (74%), kneeling (73%) or standing (72%), and kneeling/squatting (70%). Similar items across different PROs were correlated with one another. Self- reported functional impairment was significantly differentiated by BPI pain interference, IPAQ total activity, SF-36v2 physical functioning, and all HAL domains and summary scores.

Conclusion:

PRO instruments assessing functional status range from simple/generic (EQ-5D-5L) to complex/disease-specific (HAL) and provide varying levels of detail. Greater use of formal PRO instruments in the clinical setting may improve dialogue between health care professionals and patients/caregivers and inform proactive approaches to specifically target patient identified functional limitations (eg, HAL) and identify areas for further targeted management strategies.

Objective:

To assess the effect of digital monitoring on bleeding rates in patients with hemophilia A using prophylaxis.

Methods:

A total of 294 eligible patients with hemophilia A were included in our observational study. Eligible patients used clotting factor concentrates and had no active inhibitors. Patients used a digital health tool powered by MicroHealth to log bleeds and infusions via smartphone, texting, or online. The study observational period was August 2014 to January 2015. Patients using the tool could choose to invite their care professionals for monitoring. For each patient, Hemophilia Treatment Center (HTC) monitoring was defined as having at least one HTC professional: 1. Linked to the patient and with online access to the infusion logs; 2. Receiving notifications when the patient had bleeds and/or had adherence below a threshold, and; 3. Having two or more patients under monitoring. There were a total of 35 and 259 patients in the monitoring and non-monitoring groups, respectively.

We conducted Bayesian analysis using linear mixed models and a negative binomial distribution to compare the relative risk of bleeding rates for patients with and without HTC monitoring.

Summary:

Patients using HTC monitoring had a relative bleeding rate of 0.60 vs. patients without monitoring, which is equivalent to a 40% reduction in bleeding rates for monitored patients (95% credible interval: 0.38—0.96).

Patients on the monitoring and no monitoring groups were comparable except that the monitoring group had 23% more pediatric patients (p<0.001). However, bleeding rates between pediatric and adults were comparable (p=0.500). Subgroup analysis showed no differences in the reductions of bleeding rates due to monitoring between pediatric-only and adult-only subgroups (p=0.353).

Conclusions:

The use of digital tools for chronic care monitoring is a growing global trend.

A reduction in the annualized bleeding rate of 40% (~2 bleeds a year) is both statistically and clinically significant and may have a cumulative protective impact on patients’ long-term outcomes. Observational studies are subject to sample bias, however, patients in both groups were technologically savvy and motivated enough to track their condition using a digital health tool. Given that this intervention is free, safe, and fits the accountable care model, we encourage clinicians to explore its adoption. Confirmatory studies on this topic are encouraged.

Objective:

Personalizing treatment to a patient’s lifestyle and promoting overall health and wellness in persons with hemophilia (PWH) is essential to optimizing outcomes. There is limited evidence that correlates how activity and infusions impact bleeding episodes and further data on this relationship is needed. The research objective of SPACE is to prospectively explore the association between activity level, timing of infusion, and occurrence of a bleeding episode in PWH using novel technology.

Methods:

This six-month prospective, observational study includes PWH A or B in the United States currently receiving ADVATE or RIXUBIS between the ages of 13 and 65 years. Enrolled PWH use a smartphone eDiary application to log information on activities, infusions, and bleeding episodes. As an additional measurement of activity, enrollees are given a FitBit, a consumer-based activity tracker that measures steps taken and calories burned. Activity types are assessed based on their level of perceived risk for collision, according to the NHF “Playing It Safe” brochure. We report here current study status and descriptive analysis of baseline data.

Results:

The interim analysis included 15 patients with a median age of 19 (Range: 13 to 47). At baseline, 87% of patients were on prophylaxis and 13% treated on-demand treatment. Fifty-three percent of patients had 0 target joints at baseline. Eighty-seven percent of patients indicated that they had discussed activity participation with their physician. Sixty-seven percent of patients considered themselves ‘very satisfied’ or ‘satisfied’ with their level of activity. Data collected from the FitBit indicated that patients in SPACE walked on average 7,367 (SD: 3250) steps per day and burned 979 (SD: 398) calories from their activity. For patients on prophylaxis, the mean number of days per week doing mild, moderate and strenuous activity were 3.57, 2.64, and 1.5 respectively. Of the data reported on bleeding episodes, 40% of patients reported no bleeds at the time of the interim analysis. Forty percent of patients did not report having a bleed at the time of the interim analysis. Of all bleeds reported, 34% were associated with physical activity.

Conclusions:

Current data from SPACE demonstrates that subjects are active and participating in various activities. Continued data will provide better understanding of the types of activities and infusion schedules that may be associated with risk as well as protective effects on bleeding episodes by infusing prior to activity. A personalized approach to treatment based on physical activity levels may minimize bleeding risk in PWH.

Background:

Until recently, the hemophilia B community has only had standard Factor IX (FIX-Fc) products as treatment choices. With the availability of additional standard rFIX products and extended half-life (EHL) rFIX-Fc, there has been much debate (1-4) regarding clinical and cost expectations, balanced with optimizing use in patients. To level the debate, an understanding of real-world prescription costs of patients who switch to EHL FIX-Fc products is warranted.

Objectives:

1) To characterize patients who switch from rFIX to EHL rFIX-Fc, and 2) to understand their change in factor costs.

Methods:

Retrospective analysis using national US specialty pharmacy dispensing databases from Jan 1, 2013-Apr 25, 2015 of Hemophilia B (ICD-9 code 286.1) individuals who switched from rFIX to rFIX-Fc. Descriptive statistics summarized patient characteristics. Patients who had at least 90 days of prescription coverage on both products were included. Utilization was averaged on a monthly basis pre and post switch. Costs were calculated by multiplying the units by the wholesale acquisition prices for each product (Red Book) and the percentage change in cost from rFIX to EHL-rFIX was compared. This analysis studied patients who switched but stayed on similar regimens. Cohorts were characterized as prophylaxis to prophylaxis (P to P), or on-demand to on-demand (OD to OD).

Results:

Sixteen switchers were included in the study. Hemophilia severity was reported as 62.5% severe, 12.5% moderate, 6.25% mild, and 18.75% of unknown severity. The P to P cohort comprised of the majority of patients at 87.5% (n=14) while OD to OD were smaller at 11% (n=2). The median ages for these cohorts were similar. The P to P median age was 15 (range: 5-51) and OD to OD was 14 (range: 13-15) years old. Median prescription costs increased in the P to P cohort by 40% (range: -56% to 181%), while OD to OD increased by 173% (range: 1% to 348%).

Conclusion:

While the availability of EHL rFIX-Fc allows hemophilia B patients an option with less frequent infusions, our findings demonstrate that for those who initially switched from prophylaxis to prophylaxis or from on-demand to on-demand regimens, costs increased for the majority of patients. This analysis provides initial real-world cost data for those who have switched to EHL and may be helpful in decision makers’ understanding of the value of EHL rFIX-Fc in hemophilia B.

Objective:

To assess pain and functional impairment through 5 patient-reported outcome (PRO) instruments in non-bleeding adults with hemophilia.

Methods:

Adult men with hemophilia (mild-severe) with history of joint pain/bleeding completed a hemophilia/pain history and 5 PROs (EQ-5D-5L with visual analog scale [VAS], Brief Pain Inventory v2 [BPI-SF], International Physical Activity Questionnaire [IPAQ-SF], SF- 36v2, and Hemophilia Activities List [HAL]) during routine visits. Initial patients were asked to complete the PROs again after their estimated 3-4 hour visit (retest population). PRO scores were calculated from published algorithms. Generally, higher scores indicate better health- related quality of life (HRQoL) and functional status, and greater pain severity/interference.

Summary:

381 Patients were enrolled between October 2013 and October 2014; 164 of the initial 187 completed the retest and are reported here. Median time for completion of the initial survey/PROs was 36.0 minutes and 21.0 minutes for the PRO retest. Most retest subjects had hemophilia A (74.4%) and were white-non-Hispanic (72.6%). Median (Q1, Q3) age was 33.9 (26.9, 46.0), 48.7% were married, 62.6% had some college or graduate education, 80.7% were employed, and 61.0% were overweight or obese. HCV (49.4%) was more common than HIV (16.5%); 61.0% self-reported arthritis/bone/joint problems. Median EQ-5D- 5L VAS was 80.0 (0-100 scale), and EQ-5D-5L health index 0.80 (-0.11-1 scale); 61.6% reported any problems with mobility (29.3% reported moderate/severe problems), 55.8% with usual activities (18.4% moderate/severe), and 22.0% with self-care (4.3% moderate/severe). 73.2% reported pain-discomfort (43.3% moderate/severe), and 41.1% anxiety-depression (14.7% moderate/severe). For BPI, median pain severity was 3.0 (0-10 scale) and pain interference 2.9 (0-10 scale); median worst pain was 6.0, least pain 2.0, average pain 3.0, and current pain 2.0. Pain most impacted general activity, mood, walking ability, and normal work, and least impacted relations with other people. Ankles were the most frequently reported site of pain. Median IPAQ total activity was 693.0 MET/min/week; 49.3% reported no activity in the prior week. Median SF-36v2 scores (0-100 scale) were lower for physical health (39.6) than for mental health (51.6). Median overall HAL score was 76.1 (0-100 scale); complex lower extremity activities were the most impacted activity domain.

Conclusions:

These 5 PRO instruments provide different levels of detail describing the impact of hemophilia on pain and function, and consequently, have varied burdens of administration. PRO data from the retest population demonstrate that most adults with hemophilia experience pain and functional impairment that impacts HRQoL, highlighting the importance of assessments and patient dialogue.

Objective:

Clinical knowledge gaps of hemophilia can affect patient outcomes through delayed diagnosis/referral as well as improper monitoring and interventions. A study was undertaken to identify and characterize clinical practice gaps and confidence levels in the management of hemophilia specific to pediatricians.

Methods:

Building upon a previous assessment developed in 2014, an updated global, hemophilia-specific continuing medical education-accredited clinical practice assessment survey was developed utilizing current evidence-based consensus guidelines and best practices, including guidelines from the National Hemophilia Foundation and the World Federation of Hemophilia. The assessment included both knowledge- and case -based, multiple-choice questions that healthcare providers completed confidentially on-line between March 23, 2015 and April 9, 2015. Areas such as appropriate triggers for initiating prophylaxis and use of physical therapy were assessed. Responses from pediatric providers were de- identified and aggregated prior to analysis.

Summary:

660 pediatricians (30% of total respondents) completed the survey, from the following locales: North America (36%), Asia (23%), Europe (15%), Middle East (10%), Africa (7%), Central/South America (6%), and Australia (4%). Academic (31%), private practice (27%), community hospital (19%), community clinic (12%), and hemophilia treatment center (3%) practice settings were identified. Analysis of pediatricians who indicated professional interaction with hemophilia patients (87% of pediatrician respondents) demonstrated knowledge gaps including (% incorrect responses): classification of severity of hemophilia (37%); optimal use of prophylactic therapy, e.g., when to initiate (31%), at what dose (53%), prophylaxis in active patients (26%); likelihood of inhibitors (75%); using bypassing therapy (58%); comprehensive care model (61%); supporting overall joint health and quality of life (70%); and adherence (60%). A low level of confidence in the ability to identify when to use prophylaxis was reported among 31% of pediatricians. The top barriers to the administration of prophylaxis identified by the pediatric providers included lack of availability of FVIII or FIX concentrates, lack of venous access, and insurance coverage (29%, 22%, and 21% for respondents, respectively).

Conclusions:

This study demonstrated gaps in knowledge and confidence about the assessment and optimal care of hemophilia for pediatricians, suggesting that further education specific to the needs of these providers is warranted.

Objective:

To evaluate the effect of bleeding episodes on hemophilia patient burden of illness using observational data.

Methods:

Between 2005-2007 and 2009-2012, the Hemophilia Utilization Group Studies Va and Vb, respectively, recruited patients from ten Hemophilia Treatment Centers (HTCs) in eleven states. Adult patients or parents of children with hemophilia A or B completed an initial survey assessing socio-demographics, clinical characteristics, and treatment regimen. Work absenteeism, underemployment due to hemophilia, and unpaid hemophilia-related caregiver time were recorded at regular intervals over two years to estimate indirect costs using the human capital approach. Direct costs were estimated using healthcare services utilization and drug dispensing records. All costs were annualized and converted to 2014 US dollars. Annual mean bleeding episodes were calculated from patient-reported number of bleeds recorded in follow-up interviews, and used to stratify patients into bleeding categories of 0, 1-3, 4-6, 7-9, and 10+ bleeds. Associations between bleeding episodes and healthcare utilization, work productivity losses, and total costs were analyzed in patient subgroups based on both severity and treatment regimen.

Results:

Of 477 recruited patients, 352 with complete healthcare utilization and dispensing records and at least three months of follow-ups were included. A larger proportion of hemophilia A patients had severe disease and used prophylaxis compared to those with hemophilia B, but no socio-demographic variables differed significantly between the groups. Among severe patients, adults compared to children and episodic treatment compared to prophylaxis users had significantly more average annual bleeds [respective mean(standard deviation): 16.24(13.9) vs 5.54(9.47), p<0.0001 and 15.69(12.65) vs 8.39(11.1), p<0.0001]. Nearly two-thirds of the 82 severe patients using episodic treatment (63.4%) had 10 or more annual bleeds. Higher bleeding categories (more annual bleeds) were significantly associated with higher annual mean indirect costs for mild/moderate patients using episodic treatment [mean range across categories: $423-$21,434 (p=0.0003)] and severe patients on prophylaxis [$6,467-$14,890 (p=0.005]. Increased bleeding was also significantly associated with higher mean total costs in episodic treatment users with mild/moderate disease [$17,373- $136,552 (p<0.0001)] and severe disease [$83,957-$226,614 (p=0.008)]. Across all subgroups, increased bleeding was associated with more emergency room visits, outpatient procedures, and missed days of work, oftentimes reaching statistical significance.

Conclusions:

A larger proportion of severe hemophilia patients treating episodically have poor bleed management compared to those on prophylaxis. Overall, higher bleeding frequency is associated with both higher direct and indirect costs for individuals with hemophilia A and B across disease severity and treatment regimen.

Objective:

Patient satisfaction with healthcare services enhances patient experience, improves outcomes, and is increasingly mandated by public and private payers. While many US Hemophilia Treatment Centers (HTC) periodically assess patient satisfaction, the lack of a uniform survey hampered national measurement. To remedy this knowledge gap, the US HTC Network implemented a national patient satisfaction survey in 2015.

Methods:

A Regional HTC Coordinator workgroup devised, piloted, and finalized a two-page survey for self-administration online, at clinic, or at home, in English or Spanish and mailed to households. Survey content and format were based on national health surveys to enhance comparability and scientific robustness, informed by legacy regional HTC surveys. Questions assessed patient demographics; satisfaction with services, team members, and care processes; and Healthy People 2020 adolescent transition objectives. Surveys included open ended questions to obtain qualitative data. Respondents were anonymous but identified with their respective HTCs. Participation was voluntary. Persons with genetic bleeding disorders who had HTC contact in 2014 were eligible. During February 2015, 124/130 HTCs sent surveys to 27,563 households. Parents completed surveys for children under age 15. No reminders were sent. Data were entered and analyzed at a central site and aggregated at national, regional and HTC levels.

Results:

Over 4800 households (17.4%) returned surveys by April 30, 2015. National analyses on 4332 surveys reveal that 96.6% were ‘always’ or ‘usually’ satisfied with HTC care. Over 80% were ‘always’ satisfied with the core HTC team members. Three quarters of 12-17 year olds were ‘always’ satisfied with HTC encouragement regarding becoming more independent, and how the HTC discussed caring for a bleeding disorder upon reaching adulthood. Eighty– 90% were ‘always’ or ‘usually’ satisfied with care processes, e.g. shared decision making, care coordination, ease of obtaining timely information and services, and being treated respectfully. Insurance and language were ‘always’ a problem for 20%. 29.0% of respondents were female and 10.3% Hispanic. 83.4% were Caucasian, 5.8 African- American, 3.1% Asian/Pacific Islander or Native Hawaiian, 4.3% Multiple races, and 4% Other. Over half had severe or moderate FVIII or FIX deficiency or VWD Type 3. Ages ranged from newborns to 96 years: 38% under 18, 20% age 18 – 34, and 42% over age 35.

Conclusions:

Implementing a National Patient Satisfaction Survey for the US HTCN is feasible, and provides valuable information. Satisfaction with HTC services is high, but insurance and language ‘always’ pose problems for one fifth. Further analyses will examine regional differences.