[Prevalence and factors of nonalcoholic fatty liver disease among elderly in Shenzhen City in 2018].

Objective: To analyze the prevalence and influence factors of nonalcoholic fatty liver disease(NAFLD) among elderly in Shenzhen City.
Methods: From January to December in 2018, a convenient sampling method was used to select 121 042 survey subjects from Shenzhen community residents aged 65 years and above through questionnaire survey, physical examination, laboratory biochemical examination and b-ultrasound examination, demographic information, lifestyle, height, weight, waist circumference, blood pressure, fasting blood glucose, blood lipids, past history and liver B ultrasound result were collected. A total of 121 042 of the subjects were selected for the study with complete information. The logistic regression analysis were used to analyze the data.
Results: There were 33 179 NAFLD patients(27.41%). The variables adjusted by logistic regression analysis revealed that male(OR=0.633, 95%CI 0.612-0.654), illiteracy(OR=0.761, 95%CI 0.720-0.804), primary school education(OR=0.889, 95%CI 0.862-0.916), current smoking(OR=0.719, 95%CI 0.675-0.767), former smoking(OR=0.802, 95%CI 0.749-0.859), low-weight(OR=0.157, 95%CI 0.128-0.193) was negatively correlated with NAFLD(P<0.01).65-79 years old, obesity(OR=4.744, 95%CI 4.511-4.989), overweight(OR=2.421, 95%CI 2.341-2.504), central obesity(OR=1.823, 95%CI 1.764-1.883), hypertension(OR=1.101, 95%CI 1.069-1.134), diabetes(OR=1.578, 95%CI 1.528-1.630) and dyslipidemia(OR=1.685, 95%CI 1.639-1.734) was positive correlation with NAFLD(P<0.01).
Conclusion: The prevalence of NAFLD among the elderly in Shenzhen City is relatively low compared with the national level, but its absolute value is higher. The prevalence of NAFLD is higher among the elderly who are female, highly educated, overweight, obese, central obese, suffering from hypertension, diabetes and dyslipidemia.