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ObjectiveTo investigate the related factors of hypertension and comorbid hypertension-diabetes mellitus （HT-DM） among rural residents in Shanghai， China.MethodsA total of 2 159 residents over 35 years old were randomly selected from a rural community in the suburbs of Shanghai through cluster random sampling. Their basic sociological characteristics and blood lipid levels were investigated. Chi-square test was used to analyze the relationship between hypertension （or HT-DM） and gender， age， education levels， marital status， original household registration and current household registration. The relationship between hypertension （or HT-DM） and blood lipid level was analyzed by a conditional logistic regression model.ResultsThe prevalence of hypertension was 26.35% and that of HT-DM was 4.68% in the study population. Chi-square test analysis showed that hypertension was significantly associated with age， marital status， educational level， and rural household registration， while HT-DM was significantly associated with age， educational level， and rural household registration. Chi-square trend analysis indicated that the prevalence of hypertension and HT-DM increased with age in both male and female populations （χ2=129.82， 193.04，both P