Figure 2. Legend:

ISI = Insomnia Severity Index; wk = week number of visit in the treatment phase; 6 mo. = 6-month post-treatment follow-up visit; model statistics of mixed effects maximum likelihood regression using unstructured covariance matrix and adjusted for Race; time: β = −1.05, p=0.01; treatment: β = 1.5, p = 0.5; treatment x time: β = −1.3, p = 0.03;