PMID- 30477846 OWN - NLM STAT- MEDLINE DCOM- 20190308 LR - 20190308 IS - 1873-6963 (Electronic) IS - 0965-2299 (Linking) VI - 41 DP - 2018 Dec TI - Hypnotherapy for insomnia: A randomized controlled trial comparing generic and disease-specific suggestions. PG - 231-239 LID - S0965-2299(18)30618-6 [pii] LID - 10.1016/j.ctim.2018.10.008 [doi] AB - STUDY OBJECTIVES: Hypnotherapy is commonly used for treating insomnia, but a definite conclusion regarding its safety and effectiveness is unavailable due to a lack of adverse event monitoring and comparison between generic and disease-specific hypnotic suggestions in previous studies. DESIGN: Randomized controlled, participant-blind, parallel-group with subject recruitment after trial registry. INTERVENTIONS: Sixty participants were randomized to receive 4-week once-weekly 1-hour hypnotherapy with disease-specific suggestions (using counter-hyperarousal hypnotic exercise and screen visualization technique targeted at insomnia-related anxieties) or generic suggestions (using thought distraction technique and suggestions for self-confidence and self-care enhancement). MAIN OUTCOME MEASURES: Primary outcome was sleep efficiency (SE) derived from 1-week sleep diary at weeks 4, 6 and 9. Secondary outcomes included other sleep-diary parameters, Insomnia Severity Index, Hospital Anxiety and Depression Scale, and Sheehan Disability Index. Treatment expectancy, adverse events (AEs), and subjective experiences were obtained after hypnotherapy sessions 2 and 4. RESULTS: Mixed linear modeling showed that time effect was significant for most variables. Within-group effect size of sleep-diary-derived SE from baseline to follow-up ranged from 0.70 to 0.90 for disease-specific suggestions (mean difference: 8.5-10.4%); for generic suggestions, it was 0.65-0.69 (mean difference: 6.8-8.3%); however, no significant between-group difference was found. Discontinuation rate was 10%, report of unpleasantness varied from 5.5 to 7.4%, while the incidence of AEs ranged from 37.0 to 51.8%, depending on session content. CONCLUSION: Hypnotherapy using disease-specific and generic suggestions produced similar improvements in sleep and daytime functioning. AEs were common but mostly mild. The finding raises doubts about the value of disease-specific suggestions in hypnotherapy for insomnia. TRIAL REGISTRATION: This clinical trial was registered on 23 May 2014 at the University of Hong Kong Clinical Trials Registry as "Hypnotherapy for insomnia: a randomized placebo-controlled trial" (HKUCTR-1874). CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Lam, Tak-Ho AU - Lam TH AD - Department of Psychiatry, University of Hong Kong, Hong Kong Special Administrative Region. FAU - Chung, Ka-Fai AU - Chung KF AD - Department of Psychiatry, University of Hong Kong, Hong Kong Special Administrative Region. Electronic address: kfchung@hku.hk. FAU - Lee, Chit-Tat AU - Lee CT AD - Department of Psychiatry, Queen Mary Hospital, Hong Kong Special Administrative Region. FAU - Yeung, Wing-Fai AU - Yeung WF AD - School of Nursing, Hong Kong Polytechnic University, Hong Kong Special Administrative Region. FAU - Yu, Branda Yee-Man AU - Yu BY AD - School of Nursing, Hong Kong Polytechnic University, Hong Kong Special Administrative Region. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20181009 PL - Scotland TA - Complement Ther Med JT - Complementary therapies in medicine JID - 9308777 SB - IM MH - Adolescent MH - Adult MH - Aged MH - China MH - Female MH - Humans MH - *Hypnosis MH - Male MH - Middle Aged MH - Patient Satisfaction MH - Sleep Initiation and Maintenance Disorders/*therapy MH - Young Adult OTO - NOTNLM OT - Disease-specific suggestions OT - Generic suggestions OT - Hypnosis OT - Hypnotherapy OT - Insomnia OT - Randomized controlled trial OT - Sleep EDAT- 2018/11/28 06:00 MHDA- 2019/03/09 06:00 CRDT- 2018/11/28 06:00 PHST- 2018/06/28 00:00 [received] PHST- 2018/09/07 00:00 [revised] PHST- 2018/10/08 00:00 [accepted] PHST- 2018/11/28 06:00 [entrez] PHST- 2018/11/28 06:00 [pubmed] PHST- 2019/03/09 06:00 [medline] AID - S0965-2299(18)30618-6 [pii] AID - 10.1016/j.ctim.2018.10.008 [doi] PST - ppublish SO - Complement Ther Med. 2018 Dec;41:231-239. doi: 10.1016/j.ctim.2018.10.008. Epub 2018 Oct 9.