Epidemological study of the relationship between night-shift, sleep problems and medical accidents among nurses

有人指出，睡眠问题与职业错误或差点失误之间可能存在关联。因此，揭示护理人员睡眠问题与医疗失误之现况，为探讨夜班或不定期班工作人员维护身心健康及预防职业性失误之措施提供依据，是非常重要的。本研究以医院护理人员为对象，调查其夜班工作和睡眠障碍的实际状况，并分析夜班工作与各种医疗事故之间的关联。调查对象是在8家拥有400张或更多床位的医院工作的护士。回答数为4，407份，问卷回收率为94.0%。一个统计学上显着的关系，观察到医疗失误和夜班工作。睡眠时间的分布与医疗差错之间没有统计学意义的关系。在（1）入睡困难和白天过度嗜睡与（2）医疗失误之间观察到统计学显著相关性，但在（1）主观睡眠评估、维持睡眠困难、清晨醒来和难以恢复睡眠与（2）医疗失误之间未观察到统计学显著相关性。

It has been pointed out that there may be associations between sleep problems and occupational mistakes or near-misses. It is therefore critical to reveal the actual statuses of sleep problems and medical mistakes among nurses in order to have a basis for discussion of measures for workers who work night or irregular shifts to maintain g6od health and to prevent occupational mistakes. In the present study, a survey was conducted targeting hospital nurses to examine the actual statuses of night-shift work and sleep disorders among nurses and to analyze associations between night-shift work and various medical accidents. The survey targets were nurses working in eight hospitals equipped with 400 beds or more. The number of responses was 4,407, and the collection rate of the questionnaire was 94.0%. A statistically significant relationship was observed between medical mistakes and night-shift work. No statistically significant relationship was observed between the distribution of sleep duration and medical mistakes. Statistically siqnificant relationships were observed between (1) difficulty in initiating sleep and excessive daytime sleepiness and (2) medical mistakes, but no statistically significant relationship was observed between (1) subjective sleep evaluation, difficulty in maintaining sleep, and early-morning awakening and difficulty in getting back to sleep and (2) medical mistakes.