目的探讨性别、年龄和体重指数(BMI)对脂肪肝患病的影响。方法对2013年在苏州工业园区体检中心进行年度健康检查的在岗职工检查资料进行分析,肝脏超声诊断结果为脂肪肝者纳入病例组,对不同性别、年龄和BMI之间脂肪肝患病率进行比较分析,采用多因素logistic回归分析性别、年龄及BMI等影响因素。结果总共2 200例具有完整人口学特征、临床及实验室检查资料者纳入调查对象,脂肪肝患病率为18.36%,其中男性25.7%,女性5.3%。脂肪肝患病率在性别、年龄、超重和肥胖人员中发生率差异均有统计学意义,多因素logistic回归分析表明,脂肪肝患病率与性别、年龄、体重指数有关。结论提示男性、年龄和超重肥胖是脂肪肝的危险因素。 Objective To investigate the effect of gender, age and body mass index (BMI) on the prevalence of fatty liver. Methods The data of on-the-job staff examination conducted in 2013 in Suzhou Industrial Park Physical Examination Center were analyzed. The results of liver ultrasound diagnosis of fatty liver were included in the case group, and the prevalence of fatty liver was compared between different sexes, ages and BMI Analysis, using multivariate logistic regression analysis of gender, age and BMI and other influencing factors. Results A total of 2200 cases had complete demographic characteristics. The clinical and laboratory data were included in the survey. The prevalence of fatty liver was 18.36%, of which 25.7% were male and 5.3% were female. The prevalence of fatty liver was significantly different among the gender, age, overweight and obese people. Multivariate logistic regression analysis showed that the prevalence of fatty liver was related to gender, age and body mass index. Conclusions Men, age and overweight and obesity are risk factors for fatty liver.