Sleep Medicine

Single‑session, peer‑delivered CBT improved insomnia severity and related symptoms in students.

In a randomized trial of 178 university students, the single‑session peer‑delivered intervention improved sleep hygiene and insomnia severity versus waitlist at 3 weeks. Effect sizes were moderate to large for sleep hygiene (d = 0.78) and insomnia severity (d = -0.74). There were no group differences in primary sleep diary outcomes or actigraphy measures. This low‑barrier approach may suit student populations, but active comparators and longer follow‑up are needed. 1

Within‑person sleep disturbances modestly predict next‑day suicidal ideation.

Meta‑analysis of 12 studies (959 participants) found a small but significant within‑person association between sleep disturbances and next‑day suicidal ideation (r = 0.128). Results were consistent across sleep dimensions, assessment methods, and age groups. Individual night effects are small but could accumulate over time, supporting sleep monitoring in digital risk frameworks. Causality and mechanistic pathways remain unestablished; use findings to augment, not replace, standard risk assessment. 2

Ru‑SATED and SHI show acceptable psychometrics; choose by measurement aim.

Systematic review of 19 validation studies found both Ru‑SATED and the Sleep Health Index (SHI) have acceptable psychometric properties across cultures. SHI exhibited greater consistency and includes targeted sleep disorder assessment, whereas Ru‑SATED excludes disorder measurement. Selecting an instrument should depend on study purpose, sample, and whether explicit disorder assessment is required. Authors recommend combining sleep health and disorder characterization to fully capture sleep‑health relationships. 3