Effects of an internet-delivered insomnia intervention for older adults: A secondary analysis on symptoms of depression and anxiety

Objective To test whether an Internet-delivered cognitive behavioral therapy for insomnia (CBT-I) program for older adults attenuates symptoms of depression and anxiety. Methods Adults aged [greater than or equal to] 55 with insomnia were randomized to SHUTi-OASIS (Sleep Healthy Using the Internet for Older Adult Sufferers of Insomnia and Sleeplessness; N = 207) or Patient Education (PE; N = 104). Depression and anxiety were assessed (HADS-D and HADS-A, respectively) at baseline, post-assessment, and 6- and 12-month follow-ups. Results Multilevel modeling of HADS-D showed a condition by time interaction (F[3,779] = 3.23, p = .02): SHUTi-OASIS participants reported lower symptoms than PE at post-assessment. There was no such interaction effect for HADS-A (F[3,779] = 2.12, p = .10). Generalized linear modeling showed no moderation of effects by baseline symptom severity. Conclusions Participants randomized to Internet-delivered CBT-I showed stable depression and anxiety across time, while control participants' depressive symptoms briefly increased. CBT-I may help prevent development or worsening of psychological distress among older adults with insomnia. TRIAL REGISTRATION [Registered at ClinicalTrials.gov; identifier removed for anonymity]
Author(s): Kelly M. Shaffer [sup.1] , Jessica G. Smith [sup.1] , Jillian V. Glazer [sup.1] , Fabian Camacho [sup.1] , Philip I. Chow [sup.1] , Meghan Mattos [sup.1] , Karen [...]