Association of procrastination on eveningness and sleep problems

作者：Osao M, Takano Y, Komada Y, Takagi S, Inoue Y · 发表于：Sleep medicine · 年份：2026 · DOI：10.1016/j.sleep.2026.109149 · 研究领域：Chronotype、Procrastination、Sleep Wake Disorders、Circadian Rhythm、Humans、Adult、Cross-Sectional Studies、Female、Male、Surveys and Questionnaires、Middle Aged、Sleep Quality

BACKGROUND: Procrastination has been associated with several adverse outcomes, including sleep disturbance. However, it remains unclear whether procrastination is independently associated with sleep disturbance after accounting for demographics, lifestyle factors, sleep hygiene, and ADHD traits. It is also uncertain whether this association is partly mediated by chronotype. METHODS: A cross-sectional web-based survey was conducted among 2971 adults aged 18-59 years. Participants completed validated self-report measures assessing procrastination, sleep disturbance using the Pittsburgh Sleep Quality Index, chronotype using the reduced Morningness-Eveningness Questionnaire, and ADHD traits using the Adult ADHD Self-Report Scale. Multiple regression analyses were adjusted for demographic factors, lifestyle factors, sleep hygiene, and ADHD traits. Mediation analyses were performed using bootstrapping with 5000 resamples. RESULTS: Procrastination was significantly associated with greater sleep disturbance (direct effect = 0.43, 95% CI [0.30, 0.55], p < .001) and indirectly through eveningness tendency (indirect effect = 0.07, 95%CI [0.05, 0.10]). Stratified analyses indicated that this mediation pattern was evident in participants without ADHD traits but not in those with ADHD traits. CONCLUSIONS: Procrastination was independently associated with sleep disturbance, and this association was partly explained by eveningness tendency. This chronotype-mediated pathway was observed on...