目的 研究高尿酸（UA）和肥胖的交互作用对非酒精性脂肪肝病（NAFLD）患病率的影响。方法 采用病例对照的研究法,选取2021年1月至2021年12月兰州市某医院健康体检中心进行常规健康体检的504人为研究对象,按照诊断标准分为NAFLD组187人和非NAFLD 组317人。采用Logistic 回归模型、相乘、相加交互模型探讨非酒精性脂肪肝病患病风险的影响因素及因素间的交互作用。结果 多因素条件Logistic回归分析可知,肥胖（OR=4.87,95%CI：3.01~7.89）,糖尿病患者（OR=3.40,95%CI：1.51~7.68）,幽门螺杆菌（Hp）携带者（OR=1.62,95%CI：1.03~2.57）,高尿酸血症的NAFLD患病风险增加,分别是正常者、非糖尿病患者、非Hp携带者,非高尿酸血症的4.87倍,3.40倍,1.62倍,2.28倍,在调整混杂因素后交互作用结果显示,高尿酸血症和肥胖对NAFLD患病率有相乘交互作用（OR=0.30,95%CI：0.10~0.88,P=0.029）、但无相加交互作用（相对超额危险度比=3.15、归因比=0.24、协同指数=1.34）。结论 BMI、糖尿病、Hp是NAFLD患病的独立危险因素,其中高尿酸血症和超重与肥胖对NAFLD患病有相乘交互作用,无相加交互作用。

Objective To explore the influence of the interaction of high uric acid（UA）and obesity on the prevalence of non-alcoholic fatty liver disease（NAFLD）．Methods Using a case-control study method,504 people who underwent routine health checkups at the health checkup centre of a hospital in Lanzhou City from January 2021 to December 2021 were enrolled in the study,and 187 people were included in the NAFLD group and 317 people in the non-NAFLD group according to the diagnostic criteria．Logistic regression models,multiplicative and additive interaction models were used to investigate the factors affecting the risk factors of NAFLD and the interaction between the factors．Results Multifactorial conditional logistic regression analysis showed that the risk of NAFLD was increased in obese（OR=4.87,95% CI：3.01-7.89）,diabetic patients（OR=3.40,95% CI：1.51-7.68）,Helicobacter pylori（Hp）carriers（OR=1.62,95% CI：1.03-2.57）;the increased risk of NAFLD prevalence in hyperuricaemia patients was 4.87,3.40,1.62,and 2.28 times higher than that of normal,non-diabetic,non-Hp carriers,and non-hyperuricemic individuals,respectively．And the adjusted interaction showed a multiplicative interaction of hyperuricaemia and obesity on the prevalence of NAFLD after controlling for the confounders（OR=0.30,95% CI：0.10-0.88,P=0.029）,but no additive interaction （relative excess risk due to interaction=3.15,attributable proportion due to interaction=0.24,and synergy index=1.34） interactions．Conclusions BMI,diabetes mellitus,and Hp were independent risk factors for the prevalence of NAFLD,with hyperuricaemia and overweight and obesity having multiplicative interaction and no additive interaction．

目的 明确上海市闵行区社区老人轻度认知功能障碍（MCI）发生现状,分析MCI发生的影响因素间的交互作用关系。方法 采用横断面研究方法,应用AD-8与CSI-D对该区2021年65岁以上老人MCI发生现状进行双量表评估。应用SPSS 26.0 软件,先后采用χ²检验分析受检老人吸烟、饮酒、慢性病等因素在不同检出情况的构成、二分类非条件Logistic回归分析MCI发生的影响因素,再将各因素依次纳入双因素交互作用分析模型,分析各变量对MCI发生的交互作用。结果 应用AD8与CSI-D双量表评估法具有较高的灵敏度,评估闵行区社区老人MCI阳性率为26.6%,高于其他研究,低年龄（OR=1.09,95%CI：1.04~1.14）、良好的健康心态（OR=1.67,95%CI：1.15~2.42）是减少老人MCI的保护因素,职业类型（OR=1.19,95%CI：1.04~1.38）、照料者类型（OR=1.56,95%CI：1.09~2.22）与老人MCI的发生存在相关关系。家庭月总收入与照料者类型之间、是否饮酒与照料者类型之间对老人MCI的发生存在交互作用（P均<0.05）。结论 保持良好的心态可以降低老人MCI发生风险,不同职业类型、照料者类型与老人MCI的发生具有相关关系,照料者选择保姆可能会增加老人MCI风险。

Objective To clarify the current situation of mild cognitive impairment（MCI）in the community elderly in Minhang District,Shanghai,and analyze the interaction relationship between the influencing factors of MCI．Methods A cross-sectional study method was used,and AD8 and CSI-D were used to evaluate the current situation of MCI in the elderly over 65 years old in this district in 2021．SPSS 26.0 software,chi-square test and binary unconditional Logistic regression model were used to analyze the composition of smoking,drinking,chronic diseases and other factors in different detected conditions and the influencing factors of MCI occurrence in the elderly．A factor interaction analysis model was used to analyze the interaction of each variable on the occurrence of MCI．Results The AD8 and CSI-D double-scale evaluation method had high sensitivity．The positive rate of MCI in the community elderly in Minhang District was 26.6%,which was higher than other studies．Younger age（OR=1.09,95%CI：1.04~1.14）,good health mentality（OR=1.67,95%CI：1.15~2.42）were protective factors for reducing MCI in the elderly,occupation type（OR=1.19,95%CI：1.04~1.38）,caregiver type（OR=1.56,95%CI：1.09~2.22）were correlated with the occurrence of MCI in the elderly．There were interaction effects between the total monthly household income and the type of caregivers,whether drinking or not and the type of caregivers on the occurrence of MCI in the elderly（all P<0.05）．Conclusions Maintaining a good attitude can reduce the risk of MCI in the elderly．Different occupational types and types of caregivers are related to the occurrence of MCI in the elderly．Caregivers choosing nanny may increase the risk of MCI in the elderly．