The epidemiology of employee injuries in a monitoring sentinel unit of a coastal area in China:A nine-year retrospective analysis of clinical data

The epidemiology of injury among subgroups of minors, older adults, students, and athletes has previously been investigated; however, studies investigating employee-related injuries are limited. We aimed to retrospectively analyze the epidemiological characteristics and dynamic change trends of injury among employees over a nine-year period in a coastal area in China to provide a reference for formulating injury prevention and control measures among employees. All 14,168 employee injury cases registered in a hospital injury monitoring system were analyzed from January 2013 to December 2021. The male-to-female sex ratio of the employee injury cases was 3.52:1. The floating-to-registered residence population ratio was 2.05:1. March, May, July, and September-October were peak months for employee injuries. Within the day, the injury cases of employees reached five peaks at 0800, 1000, 1500, 1800, and 2000 h. The highest five causes of injury were falling, blunt injuries, motor vehicle accidents, sharps injuries, and non-motor vehicle accidents. The highest five injury types were fracture; concussion or contusion of the brain; injury from a sharp instrument, bite, or open wound; contusion or abrasion; and sprain or strain. The main locations of the injuries were roads and streets, industrial and building sites, and homes. Vulnerable body regions included the upper limbs, lower limbs, head, trunk, and multiple regions. The independent predictors of all outcomes were census register classification; age; injury causes, locations and types; vulnerable body regions; and injury severity; on multivariate logistic regression analysis (<i>P</i> < 0.05). The average durations of missed work in the different injury outcome groups due to injuries among employees were 50.21, 42.57, 44.57, and 38.20 days, respectively. The average number of missed work days due to injuries was 49.77 days, with an increasing annual trend (F = 79.872, <i>P</i> < 0.01). The average hospitalization cost for employee injuries was ¥16250.37, with a decreasing annual trend (F = 4.621, <i>P</i> < 0.01). The average length of hospitalization was 15.22 days, with a decreasing annual trend (F = 76.657, <i>P</i> < 0.01), and the average number of days of missed work due to injuries was 49.77 days, with an increasing annual trend (F = 79.872, <i>P</i> < 0.01). The correlation coefficients showed a significant positive correlation between the average length of hospitalization and average hospitalization expenses, with an increasing trend from 2014 to 2021 (<i>P</i> < 0.05). Most employee injuries occurred in the male and floating populations. Targeted intervention measures should be implemented according to the epidemiological characteristics of injuries in relation to different populations, sexes, and ages to prevent and control injuries.