Family average income and diagnosed Type 2 diabetes in urban and rural residents in regional mainland China.
OBJECTIVE
To explore the relationship between family average income (FAI; an index of socio-economic status) and Type 2 diabetes in a region of mainland China.


METHODS
Population-based cross-sectional study, conducted between October 2000 and March 2001 in administrative villages (n = 45) randomly selected from three urban districts and two rural counties of NanJing municipality, mainland China, with a regional population of 5.6 million. Participants were all local residents aged > or = 35 years old (n = 29 340); 67.7% from urban areas, 32.3% from rural areas, 49.8% male and 50.2% female.


RESULTS
The response rate of eligible participants was 90.1%. The overall prevalence of self-reported Type 2 diabetes was 1.9%. After adjustment for possible confounding variables (age, gender, area of residence, body mass index, educational level, smoking status, occupational and leisure-time physical activity), participants in the higher and middle FAI categories were more than twice as likely to have Type 2 diabetes as those in the lower FAI category.


CONCLUSIONS
The prevalence of Type 2 diabetes is positively related to socio-economic status (indexed by FAI) in Chinese at the population level. After controlling for potential confounding factors, people in higher socio-economic status groups are more likely to have Type 2 diabetes. These associations are consistent with other effects of epidemiological transition and identify a need for preventive initiatives.
Xu
F
F
Nanjing Municipal Center for Disease Control and Prevention, Nanjing, China. f_xufei@hotmail.com
Yin
X M
XM
Zhang
M
M
Leslie
E
E
Ware
R
R
Owen
N
N
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003924:Diabetes Mellitus, Type 2 / Q000191:economics / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007182:Income / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D012423:Rural Health; D012959:Socioeconomic Factors; D014504:Urban Health