A meta-analysis of 11 studies concludes that online CBT-I is effective
Bitesize research – a brief article summary from the Sleepio team:
Zachariae et al. (2015). Efficacy of internet-delivered cognitive-behavioral therapy for insomnia – a systematic review and meta-analysis of randomized controlled trials. Sleep Medicine Reviews, published online 24 October http://dx.doi.org/10.1016/j.smrv.2015.10.004
The efficacy of digital versions of cognitive behavioural therapy (CBT), like Sleepio, has been demonstrated across many trials. This study systematically analysed the evidence of 11 randomised controlled trials to see whether any factors moderated the effectiveness of online CBT-I. Combining evidence from 1,406 participants, online CBT-I demonstrated small to large effects on insomnia, sleep efficiency, sleep quality, sleep duration, sleep latency, wake after sleep onset and number of awakenings (range Hedges’s g: 0.21 to 1.09). On average, this translated to an extra 38 minutes in sleep duration, a decrease of 21 minutes in time to fall asleep and a decrease of 26 minutes in wake time during the night. A limited number of studies provided long-term follow-up, but the effects appeared stable over 4-48 weeks. Longer treatment duration and personal clinical support predicted larger effect sizes, whereas study dropout predicted weaker effects. These results reinforce evidence that digital CBT is an effective method of delivering CBT to insomnia patients.