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Means and 95% confidence intervals for the three classes on FIRST (Ford’s Insomnia to Stress Response Test) at baseline, ISI (Insomnia Severity Index), GSES (Glasgow Sleep Effort Scale), and DBAS (Dysfunctional Beliefs and Attitudes about Sleep Scale) at BL (baseline), MID (mid-treatment), and POST (immediately post-treatment); the ISI has an additional 2-year follow-up (FU).
