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Table 5 Subjective sleep measures; Interactions

From: Efficacy of a behavioral self-help treatment with or without therapist guidance for co-morbid and primary insomnia -a randomized controlled trial

  Pre to Post Pre to Fu3
  BTS v/s WL BTS v/s BT BT v/s WL BTS v/s WL BTS v/s BT BT v/s WL
  p Effect size (ηp 2)a p Effect size (ηp 2) p Effect size (ηp 2) p Effect size (ηp 2) p Effect size (ηp 2) p Effect size (ηp 2)
ISI < .001 0.52 < .001 0.20 < .001 0.21 < .001 0.36 .006 0.08 < .001 0.18
SRBQ < .001 0.42 < .001 0.23 .007 0.08 < .001 0.33 .008 0.08 < .002 0.10
DBAS < .001 0.53 < .001 0.21 .003 0.10 -* - - - - -
Bed Time Stress < .001 0.20 < .001 0.20 .71 0.00 < .001 0.18 .001 0.12 .23 0.02
Sleep Quality < .001 0.27 .008 0.08 < .001 0.13 < .001 0.21 .02 0.06 .02 0.06
  1. Abbreviations: Abbreviations: Pre, Pre-treatment assessment; Post, Post-treatment assessment; Fu3, 3-month follow-up assessment; BTS, Bibliotherapy with support; WL, Waiting list control group; BT, Bibliotherapy; ISI, Insomnia Severity Index; SRBQ, Sleep Related Behaviours Questionnaire; DBAS, Dysfunctional Beliefs and Attitudes about Sleep
  2. a ηp 2 (Eta-2) is interpreted as explained variance in the sample
  3. * DBAS-data missing from 3-month follow-up