Department of Social and Preventive Medicine, School of Public Health and Health Professions, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA.
Scand J Work Environ Health. 2013 Jul;39(4):361-8. doi: 10.5271/sjweh.3342. Epub 2013 Jan 7.
Our previous work has suggested that the incidence of any occurrence of injury leave among police officers is higher on night shifts. In this study, we extended our inquiry to determine whether the incidence of long-term injury leave varies across shifts.
Police officers (N=419) from an urban department were included in the analysis. Daily payroll work history data from 1994-2010 was collected. Injury leave duration was examined ranging from ≥1-≥90 days. Poisson regression models were used to compute incidence rates (IR) and incidence rate ratios (IRR) of long-term injury.
Cumulative incidence of injury for different durations of leave defined as ≥1, ≥5, ≥10, ≥15, ≥30, and ≥90 days were 61.3%, 45.4%, 39.9%, 33.9%, 26.5%, and 9.6% respectively. Age-and gender adjusted IRR of long-term injury (≥90 days) for night versus day shifts was IRR 3.12, 95% confidence interval (95% CI) 1.35-7.21 and IRR 2.21, 95% CI 1.04-4.68, for night versus afternoon shifts. Among all durations examined, the largest IRR was for injury ≥90 days, night versus day shifts (IRR 3.12, 95% CI 1.35-7.21).
Night shift work was significantly associated with long-term injury among police officers after adjustment for age and gender. Although type of injury was not available, it is possible that variation in injury type across shifts might account for some of this association.
我们之前的工作表明，警察夜间轮班时受伤缺勤的发生率更高。在这项研究中，我们进一步调查了不同班次长期受伤缺勤的发生率是否存在差异。
该分析纳入了来自一个城市部门的警察（N=419）。收集了 1994-2010 年的每日工资单工作历史数据。检查了≥1-≥90 天的受伤缺勤持续时间。使用泊松回归模型计算长期受伤的发病率（IR）和发病率比（IRR）。
不同缺勤持续时间（定义为≥1、≥5、≥10、≥15、≥30 和≥90 天）的累积受伤发生率分别为 61.3%、45.4%、39.9%、33.9%、26.5%和 9.6%。年龄和性别调整后，夜班与白班相比，长期受伤（≥90 天）的 IRR 为 3.12，95%置信区间（95%CI）为 1.35-7.21，夜班与下午班相比，IRR 为 2.21，95%CI 为 1.04-4.68。在所有检查的持续时间中，受伤≥90 天的夜班与白班相比，IRR 最大（IRR 3.12，95%CI 1.35-7.21）。
夜班工作与警察长期受伤显著相关，调整年龄和性别后。虽然没有提供受伤类型，但不同班次的受伤类型可能会导致这种关联。
