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Article: Hypnotherapy for insomnia: A randomized controlled trial comparing generic and disease-specific suggestions

TitleHypnotherapy for insomnia: A randomized controlled trial comparing generic and disease-specific suggestions
Authors
KeywordsDisease-specific suggestions
Generic suggestions
Hypnosis
Hypnotherapy
Insomnia
Issue Date2018
PublisherChurchill Livingstone. The Journal's web site is located at http://www.elsevier.com/locate/issn/09652299
Citation
Complementary Therapies in Medicine, 2018, v. 41, p. 231-239 How to Cite?
AbstractStudy 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).
Persistent Identifierhttp://hdl.handle.net/10722/264277
ISSN
2017 Impact Factor: 2.084
2015 SCImago Journal Rankings: 0.649
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLam, TH-
dc.contributor.authorChung, KF-
dc.contributor.authorLee, CT-
dc.contributor.authorYeung, WF-
dc.contributor.authorYu, BYM-
dc.date.accessioned2018-10-22T07:52:21Z-
dc.date.available2018-10-22T07:52:21Z-
dc.date.issued2018-
dc.identifier.citationComplementary Therapies in Medicine, 2018, v. 41, p. 231-239-
dc.identifier.issn0965-2299-
dc.identifier.urihttp://hdl.handle.net/10722/264277-
dc.description.abstractStudy 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).-
dc.languageeng-
dc.publisherChurchill Livingstone. The Journal's web site is located at http://www.elsevier.com/locate/issn/09652299-
dc.relation.ispartofComplementary Therapies in Medicine-
dc.subjectDisease-specific suggestions-
dc.subjectGeneric suggestions-
dc.subjectHypnosis-
dc.subjectHypnotherapy-
dc.subjectInsomnia-
dc.titleHypnotherapy for insomnia: A randomized controlled trial comparing generic and disease-specific suggestions-
dc.typeArticle-
dc.identifier.emailChung, KF: kfchung@hku.hk-
dc.identifier.authorityChung, KF=rp00377-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ctim.2018.10.008-
dc.identifier.scopuseid_2-s2.0-85054701139-
dc.identifier.hkuros295739-
dc.identifier.volume41-
dc.identifier.spage231-
dc.identifier.epage239-
dc.identifier.isiWOS:000453498000035-
dc.publisher.placeUnited Kingdom-

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