title: Internet-based cognitive-behavioural therapy for insomnia (ICBT-i): a meta-analysis of randomised controlled trials.
abstract: To evaluate the effectiveness of internet-based cognitive-behavioural therapy for insomnia (ICBT-i) in adults.
  
  
  
  A meta-analysis of ICBT-i.
  
  
  
  Systematic searches of randomised controlled trials of ICBT-i were performed in the PubMed, EMBASE, PsycINFO and Cochrane Library databases up to 19 June 2016.
  
  
  
  2 reviewers independently performed study selection, quality assessment and data extraction. Outcomes of interest included sleep onset latency (SOL), total sleep time (TST), sleep efficiency (SE), wake after sleep onset (WASO), number of nocturnal awakenings (NWAK), and Insomnia Severity Index (ISI). RevMan 5.2 and Stata 13.0 meta-analysis software were used to perform statistical analysis.
  
  
  
  14 records for 15 studies (1013 experimental group participants, 591 waiting list group participants) were included. The meta-analysis indicated that, at the post-test time point, SOL decreased by 18.41 min (95% CI 13.60 to 23.21), TST increased by 22.30 min (95% CI 16.38 to 28.23), SE increased by 9.58% (95% CI 7.30% to 11.85%), WASO decreased by 22.31 min (95% CI 13.50 to 31.11), NWAK decreased by 0.52 (95% CI 0.28 to 0.76), and ISI decreased by 5.88 points (95% CI 4.29 to 7.46). Additionally SOL, TST, SE, and WASO exhibited statistically significant improvements at follow-up versus before treatment.
  
  
  
  ICBT-i is an effective treatment for adults with insomnia. This conclusion should be verified in further studies.
authors.affiliation: Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Ye
authors.affiliation: Department of Neurology, PLA 187 Hospital, Haikou, China.
authors.forename: Ni-Ka
authors.initials: NK
authors.lastname: Chen
authors.affiliation: Department of Neurology, PLA 123 Hospital, Bengbu, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Lin
authors.affiliation: Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Ya-Zhen
authors.initials: YZ
authors.lastname: Liu
authors.affiliation: Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Lang
authors.affiliation: Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Xun-Jun
authors.initials: XJ
authors.lastname: Li
authors.affiliation: Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Xin-Ju
authors.initials: XJ
authors.lastname: Yang
authors.affiliation: Department of Neurology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Xiao-Jiang
authors.initials: XJ
authors.lastname: Jiang
mesh_terms: D000328:Adult; D015928:Cognitive Behavioral Therapy; D005260:Female; D006801:Humans; D008297:Male; D016032:Randomized Controlled Trials as Topic; D007319:Sleep Initiation and Maintenance Disorders / Q000523:psychology / Q000628:therapy*; D017216:Telemedicine; D013813:Therapy, Computer-Assisted; D016896:Treatment Outcome
keywords: Cognitive behavioral therapy; insomnia; internet; meta-analysis