Sleep and Performance Research Center, Washington State University, Spokane, WA.
Elson S. Floyd College of Medicine, Washington State University, Spokane, WA.
Sleep. 2019 Mar 1;42(3). doi: 10.1093/sleep/zsy231.
Recent experimental research indicates a substantial impact of shift work related fatigue on police officers' encounters with the public. In recent years, biomathematical models of fatigue have provided a new way to identify potential relationships between working time arrangements and job performance. This study focused on public complaints against police officers and determined whether the odds of a public complaint were associated with work schedules and/or a biomathematical model's predictions of fatigue and sleepiness.
N = 144 police officers from two municipal police departments in the United States reported shift start times, shift hours, court hours, and public complaints each duty day during study participation. A biomathematical model of fatigue (FAID Quantum) predicted sleep duration and sleep timing and inferred fatigue and sleepiness for 15 744 shifts. Fatigue, sleepiness, 24 hr sleep estimates, and work schedule were tested as predictors of public complaints.
Greater fatigue, greater sleepiness, and less sleep in the 24 hr prior to a shift increased the odds of a public complaint (F ≥ 9.14, p < 0.01). Working back-to-back night shifts increased the odds of a public complaint (OR = 4.27, p < 0.01), particularly when off-duty court hours were worked between the night shifts (OR = 4.73, p < 0.01).
On-duty fatigue and sleepiness, sleep obtained prior to a shift, and working night shifts were strongly associated with public complaints. Off-duty court appearances reduced sleep between night shifts and further increased the odds of a public complaint. The results suggest that off-duty court hours should be limited between night shifts and duty schedules should be considered when scheduling court appearances.
最近的实验研究表明，轮班工作相关疲劳对警察与公众接触有重大影响。近年来，疲劳的生物数学模型为识别工作时间安排与工作绩效之间的潜在关系提供了一种新方法。本研究关注警察接到的公众投诉，并确定公众投诉的可能性是否与工作时间表和/或疲劳和困倦的生物数学模型预测有关。
来自美国两个市级警察局的 144 名警察在参与研究期间，每天报告轮班开始时间、轮班时长、开庭时间和公众投诉情况。疲劳的生物数学模型（FAID Quantum）预测了睡眠时长和睡眠时间，并推断了 15744 个班次的疲劳和困倦程度。疲劳、困倦、24 小时睡眠时间和工作时间表被测试为公众投诉的预测因素。
轮班前的疲劳程度增加、困倦程度增加和 24 小时睡眠时间减少都会增加公众投诉的可能性（F≥9.14，p<0.01）。连续上夜班会增加公众投诉的可能性（OR=4.27，p<0.01），尤其是当夜班之间有非当班开庭时间时（OR=4.73，p<0.01）。
轮班时的疲劳和困倦、轮班前获得的睡眠以及上夜班与公众投诉密切相关。非当班开庭时间会减少夜班之间的睡眠时间，进一步增加公众投诉的可能性。结果表明，夜班之间应限制非当班开庭时间，并在安排开庭时间时应考虑工作时间表。
