Schedule of enrolment, interventions and assessments made at each wave
| Measures | Enrolment | Wave 1 baseline | Allocation | Wave 2 (3 weeks) mid-assessment | Wave 3 (6 weeks) end assessment | Wave 4 (6 months) follow-up | |
| Enrolment | |||||||
| Eligibility screening | X | ||||||
| Informed consent | X | ||||||
| Saliva DNA sample | X | ||||||
| Allocation | X | ||||||
| Interventions | |||||||
| CBT-I | X | X | |||||
| Puzzles | X | X | |||||
| Assessments | |||||||
| Demographics | X | ||||||
| Medical history | X | ||||||
| Weight and height | X | X | X | ||||
| Time of year | X | X | X | X | |||
| Sleep measures | SCI | X | X | X | X | ||
| PSQI | X | X | X | X | |||
| PSQI-A | X | X | X | ||||
| PSAS | X | X | X | X | |||
| DBAS | X | X | X | X | |||
| MCTQ | X | X | X | ||||
| WUSEQ | X | X | X | ||||
| FISPI | X | X | X | ||||
| MUPS | X | ||||||
| Well-being measures | STAI | X | X | X | X | ||
| MFQ | X | X | X | X | |||
| ADHD | X | X | X | ||||
| SPEQ | X | X | X | ||||
| PMH | X | X | X | X | |||
| PSS | X | X | X | X | |||
| LTE | X | X | X | X | |||
| Lifestyle measures | Sleeping arrangements | X | X | X | X | ||
| Alcohol intake | X | X | X | X | |||
| Caffeine intake | X | X | X | X | |||
| Smoking behaviour | X | ||||||
| Vaping behaviour | X | ||||||
| Treatment acceptability | TAQ* | X | X |
*Only administered to the Sleepio group.
ADHD, attention deficit hyperactivity disorder; CBT-I, cognitive–behavioural therapy for insomnia; DBAS, Dysfunctional Beliefs About Sleep Scale; FISPI, Fearful Isolated Sleep Paralysis Interview; LTE, List of Threatening Experiences; MCTQ, Munich Chronotype Questionnaire; MFQ, Moods and Feelings Questionnaire; MUPS, Munich Parasomnia Screening; PMH, Positive Mental Health Scale; PSAS, Pre-sleep Arousal Scale; PSQI, Pittsburgh Sleep Quality Index; PSQI-A, Pittsburgh Sleep Quality Index Addendum; PSS, Perceived Stress Scale; SCI, Sleep Condition Indicator; SPEQ, Specific Psychotic Experiences Questionnaire (paranoia, hallucinations and cognitive disorganisation subscales); STAI, State–Trait Anxiety Index; TAQ, Treatment Acceptability Questionnaire; WUSEQ, Waterloo Unusual Experiences Scale.