伏案工作人员工作时长与中心型肥胖发生关系的分析

目的 了解伏案工作人员工作时长与中心型肥胖发生的关系。 方法 2019年4—7月,采用多阶段随机整群抽样方法选取某市920名伏案工作人员进行问卷调查和腰围测量,采用多因素logistic回归模型分析工作时长与中心型肥胖发生风险的关系。 结果 共获取有效样本876例,平均工作时长(48.73±3.61)h/周,中心型肥胖检出率为40.63%;不同性别、年龄、吸烟、饮酒、身体活动水平和工作时长之间中心型肥胖检出率差异有统计学意义(χ²=16.703、21.617、16.584、14.523、27.021和20.917,P均＜0.001);多因素回归分析显示,在控制混杂因素影响后,与≤34 h/周比较,35～55 h/周和≥56 h/周的OR值分别为1.35(95%CI:1.05～1.66)和1.43(95%CI:1.19～1.73),差异有统计学意义(Wald χ²=9.717、12.351,P均＜0.01)。 结论 伏案工作人员中心型肥胖率较高,工作时长增加是中心型肥胖发生的独立危险因素。

Relationship between working hours and incidence of central obesity among sedentary workers

Objective To investigate the relationship between working hours and incidence of central obesity in sedentary workers. Methods Questionnaire surveys and waist circumference measurement were conducted among 920 sedentary workers selected by a multi-stage random cluster sampling method in a city from April to July 2019. And multifactor logistic regression model was used to analyze the correlation of working hours with the risk of central obesity. Results A total of 876 valid subjects were obtained from 920 participants. The average working hours were (48.73±3.61) hours/week, and the detection rate of central obesity was 40.63%. There were statistically significant differences in the detection rate of central obesity among subjects with different genders, ages, smoking status, alcohol consumption status, physical activity level and working hours(χ²= 16.703, χ²=21.617, χ²=16.584, χ²=14.523, χ²=27.021, χ²=20.917; all P<0.001). After controlling for the potentially confounding effects, compared with ≤ 34 hours/week,multifactor regression analysis revealed that the OR values of 35-55 hours/week and ≥ 56 hours/week were 1.35(95%CI=1.05-1.66)and 1.43(95%CI=1.19-1.73), respectively, with statistically significant differences (Wald χ²=9.717, Wald χ²=12.351, both P＜0.01). Conclusion The incidence rate of central obesity in the sedentary workers was higher,and the increment of working hours was an independent risk factor for central obesity.