Long-term effects.
insomnia, Insomnia, Fatigue
Within-group comparisons were conducted at 6- and 12-month follow-ups in the intervention group and revealed large effect sizes for insomnia severity at both time points in comparison to baseline values, indicating that treatment effects were stable over time (See Within-group effects of dCBT-I at 2-, 6- and 12-months post-randomizationISI, Insomnia Severity Index; FSS, Fatigue Severity Scale, ESS, Epworth Sleepiness Scale; DBAS-16, Dysfunctional Beliefs and Attitudes About Sleep Scale; WHO-5, World Health Organisation-Five Well-Being Index; WHOQOL-BREF, WHO Quality of Life Questionnaire; Diff