Demographic predictors of bedtime procrastination in the Japanese population

IF 1 4区医学 Q4 CLINICAL NEUROLOGY Sleep and Biological Rhythms Pub Date : 2024-01-18 DOI:10.1007/s41105-023-00508-7

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Abstract

Bedtime procrastination (BP) is prevalent and problematic, with no previous study conducted in Japan. This study developed the Japanese version of the Bedtime Procrastination Scale (BPS), assessed its validity, and investigated the relationship between BP, demographic features, and sleep outcomes. Participants were divided into two samples (N = 252 and N = 630). Sample 1 involved a longitudinal study to confirm test–retest reliability of the BPS. Sample 2 involved a cross-sectional study to assess confirmatory factor analysis, criterion-related validity, construct validity, and determine the internal consistency of the BPS. The relationship between BP and demographic features (gender, age, and employment status) and sleep outcomes (Athens Insomnia Scale, sleep hours, sleep onset latency, and sleep efficiency) was investigated using Sample 2. The BPS showed good internal consistency (Cronbach’s α coefficients = .90–91), test–retest reliability (ICC = .86), and one factor model was valid; CFI = .95, TLI = .94, RMSEA = .10, and SRMR = .04. The BPS had a moderate positive association with general procrastination, moderate negative associations with self-control, sleep quality, and sleep duration on weekdays, and those who answered “yes” to the item “Do you have trouble with bedtime procrastination?” had higher BPS scores. BPS scores were moderately higher for younger participants (≤ 40 years), slightly higher for females, and non-significantly different between employment statuses. The BPS showed a significant positive correlation with insomnia symptoms, weak positive association with sleep efficiency on weekdays and holidays, and no significant association with sleep onset latencies on holidays and weekdays. This study provides new data on demographic predictors of BP in Japan. No clear effects of gender and employment status were found, but age was a strong predictor of BP, where younger age groups had a higher BP risk.

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日本人睡前拖延症的人口学预测因素

摘要睡前拖延症（BP）是一种普遍存在的问题，以前在日本没有进行过研究。本研究开发了日语版睡前拖延量表（BPS），评估了其有效性，并调查了BP、人口统计学特征和睡眠结果之间的关系。参与者被分为两个样本（N = 252 和 N = 630）。样本 1 是一项纵向研究，目的是确认 BPS 的重测可靠性。样本 2 是一项横断面研究，旨在评估确认性因子分析、标准相关有效性、构建有效性，并确定 BPS 的内部一致性。样本 2 调查了血压与人口统计学特征（性别、年龄和就业状况）和睡眠结果（雅典失眠量表、睡眠时间、睡眠开始潜伏期和睡眠效率）之间的关系。BPS显示出良好的内部一致性（Cronbach's α系数=.90-91）和测试-再测可靠性（ICC=.86），单因素模型有效；CFI=.95，TLI=.94，RMSEA=.10，SRMR=.04。BPS与一般拖延症呈中度正相关，与自控力、睡眠质量和平日睡眠时间呈中度负相关，对 "你是否有睡前拖延症 "项目回答 "是 "的人BPS得分较高。年轻参与者（≤ 40 岁）的 BPS 得分略高，女性略高，不同就业状况者的 BPS 得分差异不显著。BPS与失眠症状呈显著正相关，与平日和节假日的睡眠效率呈微弱正相关，与节假日和平日的睡眠开始潜伏期无显著相关。这项研究提供了有关日本血压人口学预测因素的新数据。研究没有发现性别和就业状况对血压有明显影响，但年龄对血压有很强的预测作用，年龄越小血压风险越高。

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来源期刊

Sleep and Biological Rhythms 医学-临床神经学

CiteScore

2.20

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： Sleep and Biological Rhythms is a quarterly peer-reviewed publication dealing with medical treatments relating to sleep. The journal publishies original articles, short papers, commentaries and the occasional reviews. In scope the journal covers mechanisms of sleep and wakefullness from the ranging perspectives of basic science, medicine, dentistry, pharmacology, psychology, engineering, public health and related branches of the social sciences