Graduate School of Economics, Waseda University, Tokyo, Japan.
Faculty of Education and Integrated Arts and Sciences, The Research Institute of Economy, Trade and Industry, Waseda University, Tokyo, Japan.
PLoS One. 2023 Oct 5;18(10):e0287051. doi: 10.1371/journal.pone.0287051. eCollection 2023.
Based on a randomized controlled trial applied to employees of a manufacturing company, this study examines the extent to which a corporate sleep program improves workers' sleep health and productivity. In the three-month sleep improvement program, applicants were randomly divided into a treatment group and a control group, and the treatment group was provided with a noncontact sensing device to visualize their sleep. A smartphone app linked to the device notified them of their sleep data every morning and presented them with advice on behavioral changes to improve their sleep on a weekly basis. The results of the analysis revealed the following. First, even after controlling for factors that may cause sleep disturbances and nocturnal awakenings, such as increased workload and the number of days spent working from home during the measurement period, the treatment group showed improved sleep after the program compared to the control group. Second, the treatment group showed statistically significant improvement in presenteeism (productivity). The effect size on presenteeism through sleep improvement was similar regardless of the estimation method used (i.e., ANCOVA estimator of ATT and two 2SLS methods were performed). In particular, we confirmed that productivity was restored through sleep improvement for the participants who diligently engaged in the program. These results suggest that promoting sleep health using information technology can improve sleep deficiency and restore productivity.
基于一项针对制造公司员工的随机对照试验，本研究考察了企业睡眠计划在多大程度上能改善员工的睡眠健康和生产力。在为期三个月的睡眠改善计划中，申请人被随机分为治疗组和对照组，治疗组提供了一种非接触式感应设备来可视化他们的睡眠。一个与设备相连的智能手机应用程序每天早上通知他们睡眠数据，并每周提供有关改善睡眠的行为改变建议。分析结果表明：第一，即使控制了可能导致睡眠障碍和夜间觉醒的因素，如工作量增加和测量期间在家工作的天数，治疗组在计划后显示出睡眠质量的改善，优于对照组。第二，治疗组在出勤主义（生产力）方面显示出统计学上的显著改善。通过改善睡眠对出勤主义的影响的效应大小，无论使用哪种估计方法（即 ATT 的 ANCOVA 估计器和两种 2SLS 方法），都是相似的。特别是，我们确认了通过参与者认真参与该计划来改善睡眠，从而恢复了生产力。这些结果表明，使用信息技术促进睡眠健康可以改善睡眠不足并恢复生产力。
