Daily affect, sleep, stressors, and suicide Risk indicators in UK adults: A Daily Diary Investigation (4-11 August 2025)

This dataset comprises fully anonymised, 7-day daily-diary data from 168 adult, native-English UK residents recruited via Prolific; all participants reported suicidal ideation or a suicide attempt within the prior 24 months.Background measures—including demographics and suicide-related experiences within the past 24 months and the past 4 weeks (non-suicidal self-injury, suicidal ideation, and suicide attempts)—were collected on 4 August 2025 (Day 0). The same participants then completed a 7-day diary protocol from 5 to 11 August 2025 (Days 1–7), comprising twice-daily surveys. The morning survey (08:00–13:00) assessed the previous night’s sleep indicators, whereas the evening survey (20:00–02:00) assessed that day’s daily hassles amount, overall positive and negative affect, and suicide-risk indicators (defeat, entrapment, reasons for living).Variables collected at Morning Survey:Subjective sleep quality :Higher scores indicate worse subjective sleep quality.Total sleep duration and sleep-onset latencyMorning tiredness :Higher scores reflected greater levels of morning tiredness.Pre-sleep arousal : Higher scores reflected greater levels of pre-sleep arousal.Variables collected at Evening Survey:Daily Stressor : The amount of daily stressor/hassle events encountered that day.Defeat: Higher total score of these four items indicated greater feelings of defeat.Entrapment : Higher total score of these four items indicated greater feelings of entrapment.Reasons for living: Higher scores indicate a stronger desire to live.Daily positive and negative affect: Higher scores indicate greater intensity of the corresponding affective state on that day.Raw item scores and all derived scale totals are provided. A comprehensive codebook—covering variable names, abbreviations, response formats, and scoring procedures—appears in Worksheet 2 of the file.The current datasets was approved by the Research Ethics Committee of the School of Psychology, University of Leeds (SoPREC 2976), and the main study hypotheses were preregistered at AsPredicted.org (#240917).