0489 Initial Results from the Hypertension with Unsatisfactory Sleep Health (HUSH) Clinical Trial for Primary Care Patients with Insomnia and Comorbid Hypertension (INS-HTN)

Abstract Introduction Insomnia is commonly comorbid with, and may contribute to, hypertension. Cognitive-behavioral treatments improve insomnia, but their effects on hypertension are uncertain, and they are often unavailable in primary care practices, where most INS-HTN patients are treated. We evaluated the efficacy of Brief Behavioral Treatment for Insomnia (BBTI) and Sleep Healthy Using the Internet (SHUTi) compared to enhanced usual care (EUC) on insomnia and home blood pressure (HBP) in primary care patients with INS-HTN. Methods Patients were recruited via electronic health records from 67 primary care practices and randomized 2:2:1 to BBTI delivered via telephone/videoconferencing; SHUTi, an automated, web-based CBT-I program; or EUC including a patient education video. Assessments included self-report questionnaires, home sleep apnea testing, and one week of sleep diary and HBP, measured at Baseline and 9 weeks/ 6 months post-treatment. The primary outcome was the Patient-Reported Outcomes Measurement Information System (PROMIS) Sleep Disturbance scale. Linear mixed models were fitted for continuous variables on the intent-to-treat sample (n=548), adjusting for age and sex. Chi-square tests were used for proportions. Results Patients were 61.8±11.3 years old, 67.2% female, and 55.9% were taking hypnotics. Insomnia Severity Index (ISI) was 15.4±4.4, Apnea-Hypopnea Index 9.8±11.4, and HBP 130±14/81±9. BBTI and SHUTi were significantly better than EUC (p≤.002) at 9 weeks and 6 months on PROMIS Sleep Disturbance and Sleep-Related Impairment scales, ISI, and diary sleep efficiency, but had inconsistent effects on PROMIS depression and anxiety scales (p=0.001-0.9). Greater proportions of BBTI and SHUTi vs. EUC-treated patients had 9-week and 6-month ISI scores