BACKGROUND: The prevalence and risk factors for nonadherence to direct-acting antivirals (DAAs) for chronic hepatitis C virus (HCV) in clinical practice settings are under-studied. OBJECTIVES: (1) To quantify DAA non-adherence in the total cohort and among subgroups with and without mental health conditions, alcohol use, and substance use, and (2) to investigate patient-and treatment-level risk factor non-adherence. DESIGN: Prospective, observational cohort study. PARTICIPANTS: A total of 1562 patients receiving DAAs between January 2016 and October 2017 at 11 US medical centers including academic and community practices. MAIN MEASURES: Self-reported medication nonadherence, defined as any missed doses in the past 7 days, surveyed early (T2: at 4 ± 2 weeks) and late in treatment (T3: 2-3 weeks prior to end of treatment). Non-adherence to post-treatment follow-up visits was defined as absence of lab results after DAA therapy completion. KEY RESULTS: Of 1447 patients, 162 (11%) reported non-adherence at T2 or T3. Medical records indicated 262 (17%) of the 1562 participants had not returned for post-treatment visits. At baseline, 37% of patients reported mental health conditions, 15% reported alcohol use, and 23% reported using substances in the previous year. Baseline characteristics associated with DAA nonadherence included alcohol use (OR 1.96), younger age (< 35 years vs. > 55 years: OR 3.40), non-white race (OR > 2.26), and DAA treatment cohort, but not substance use or mental health condition. Non-adherence to follow-up exhibited association with younger age and a higher baseline overall symptom burden. Among 1287 patients with evaluable sustained virologic response (SVR) data, 53 patients (4%) did not achieve SVR. The bivariate correlation between adherence and SVR was negligible (r = 0.01). CONCLUSIONS: DAA non-adherence was low and SVR rates were high. Mental health conditions, substance use, and alcohol use should not disqualify patients from DAA therapy. Patients with alcohol use disorder before DAA therapy initiation may benefit from targeted on-treatment support.
Summary Background To better understand symptoms experienced by patients infected with chronic hepatitis C virus (HCV), valid and reliable patient‐reported outcome (PRO) measures are needed. Aim To assess the reliability and validity of 10 patient‐reported outcomes measurement information system (PROMIS) measures and the Headache Impact Test‐6 (HIT‐6) in a large national sample of patients with HCV. Methods Pre‐treatment data from 961 patients with HCV starting direct acting antiviral therapy at 11 U.S. liver centers were analyzed. Internal reliability was evaluated using Cronbach's alpha coefficient; frequency distributions were examined for floor and ceiling effects; structural validity was investigated via item‐response‐theory models; convergent validity was evaluated using correlations with theoretically‐similar items from the HCV‐PRO and memorial symptom assessment scale (MSAS); and known‐groups validity was investigated by observing PRO differences by liver disease status and number of comorbidities. Results The HIT‐6 and the majority of the PROMIS measures yielded excellent reliability (alphas ≥ 0.87). Ceiling effects were infrequent ( < 4%), while 30%‐59% of patients reported no symptoms (floor effects). The data supported structural validity of the HIT‐6 and most PROMIS measures. The PROMIS measures showed moderate to strong correlations with theoretically‐similar items from the HCV‐PRO and MSAS (0.39‐0.77). Trends were observed between worse PRO scores and advanced cirrhosis and greater number of comorbidities, lending support for known‐groups validity. Conclusions The psychometric properties of the HIT‐6 and PROMIS measures performed satisfactorily in this large cohort of patients with HCV starting direct acting antiviral therapy. Opportunities exist for further refinement of these PROs. Evaluation of performance over time and in under‐represented subgroups is needed.
BackgroundSymptom burden, medical comorbidities, and functional well-being of patients with chronic hepatitis C virus (HCV) initiating direct acting antiviral (DAA) therapy in real-world clinical settings are not known. We characterized these patient-reported outcomes (PROs) among HCV-infected patients and explored associations with sociodemographic, liver disease, and psychiatric/substance abuse variables.Methods and findingsPROP UP is a large US multicenter observational study that enrolled 1,600 patients with chronic HCV in 2016–2017. Data collected prior to initiating DAA therapy assessed the following PROs: number of medical comorbidities; neuropsychiatric, somatic, gastrointestinal symptoms (PROMIS surveys); overall symptom burden (Memorial Symptom Assessment Scale); and functional well-being (HCV-PRO). Candidate predictors included liver disease markers and patient-reported sociodemographic, psychiatric, and alcohol/drug use features. Predictive models were explored using a random selection of 700 participants; models were then validated with data from the remaining 900 participants. The cohort was 55% male, 39% non-white, 48% had cirrhosis (12% with advanced cirrhosis); 52% were disabled or unemployed; 63% were on public health insurance or uninsured; and over 40% had markers of psychiatric illness. The median number of medical comorbidities was 4 (range: 0–15), with sleep disorders, chronic pain, diabetes, joint pain and muscle aches being present in 20–50%. Fatigue, sleep disturbance, pain and neuropsychiatric symptoms were present in over 60% and gastrointestinal symptoms in 40–50%. In multivariable validation models, the strongest and most frequent predictors of worse PROs were disability, unemployment, and use of psychiatric medications, while liver markers generally were not.ConclusionsThis large multi-center cohort study provides a comprehensive and contemporary assessment of the symptom burden and comorbid medical conditions in patients with HCV treated in real world settings. Pain, fatigue, and sleep disturbance were common and often severe. Sociodemographic and psychiatric markers were the most robust predictors of PROs. Future research that includes a rapidly changing population of HCV-infected individuals needs to evaluate how DAA therapy affects PROs and elucidate which symptoms resolve with viral eradication.Trial registration(Clinicaltrial.gov: NCT02601820).
Background & Aims The long‐term impact of hepatitis C virus (HCV) therapy with all‐oral direct‐acting antivirals (DAAs) on patient‐reported outcomes (PROs) has not been well‐described. We characterized changes in PROs from pre‐treatment to 12 months post‐treatment in a real‐world cohort. Methods PROP UP was a multi‐centre observational cohort study of 1601 patients treated with DAAs at 11 US gastroenterology/hepatology practices from 2015 to 2017. PROs were evaluated pre‐treatment (T1) and 12 months post‐treatment (T5). A minimally important change (MIC) threshold was prespecified as >5% change in PRO scores from T1 to T5. Multivariable analyses identified predictors of change. Results Three‐quarters of patients were 55 or older; 45% were female, 60% were white, 33% were black, nearly half had cirrhosis. The most commonly‐prescribed DAA regimens were sofosbuvir‐based (83%) and grazoprevir/elbasvir (11%). Study retention was >95%. On average, small improvements were observed at 3 months post‐treatment in all PROs and sustained at 12 months post‐treatment among patients with sustained virologic response (SVR). Clinically meaningful improvements were achieved in fatigue (mean change score: −3.7 [−4.2, −3.1]), sleep (mean change score: −3.1 [−3.7, −2.5]), abdominal pain (mean change score: −2.6 [−3.3, −1.9]) and functional well‐being (mean change score: −7.0 [−6.0, −8.0]). Symptom improvements were generally not sustained with no SVR (n = 52). Patients with cirrhosis and MELD ≥12 had the greatest improvements in functional well‐being (−12.9 [−17.6, −8.1]). Conclusions The improvements in patient‐reported outcomes reported by patients who achieved SVR following HCV DAA therapy were durable at 12 months post‐treatment.
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