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Does the Sleep Regularity Questionnaire capture objective sleep-wake regularity? Evidence from wearable and sleep diary data.

2026-02-26 health informatics Title + abstract only
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Sleep regularity is an important but under-measured dimension of sleep health. Objective indices from actigraphy or wearables are robust but resource-intensive. The Sleep Regularity Questionnaire (SRQ) offers a brief subjective tool, but its validity against objective and diary-based indices in healthy adults is unclear. In Part 1, 31 adults wore a smart ring continuously for 21 nights. Device-derived regularity metrics included the Sleep Regularity Index (SRI), interdaily stability (IS), socia...

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