[A research on prevalence and risk factors of type 2 diabetes mellitus in the farmers and immigrants of Yi people in Liangshan, Sichuan province, China].
OBJECTIVE
To explore the difference on the prevalence and the risk factors of type 2 diabetes(T2DM) between Yi farmer and immigrants in Liangshan, Sichuan province.


METHODS
A representative sample of 2878 Yi people (including 1549 farmers and 1329 immigrants) aged from 16 to 76 was selected by the method of multistage and cluster sampling in Liangshan, Sichuan province, China, during 2007 - 2008. The samples were divided into 5 groups by the factor of age (16-, 25-, 35-, 45- and 55-76). The standardized prevalence of T2DM was calculated by the national census data in 2000. Logistic regression analysis was used to study the related risk factors of T2DM.


RESULTS
The prevalence of Yi farmer was 4.33% (67/1549) (male: 6.15% (42/683), female: 2.89% (25/866)), and that of Yi migrants was 9.03% (120/1329) (male: 11.31% (88/778), female: 5.81% (32/551)). The standardized prevalence (SP) was calculated by the data of national census 2000. The SP of Yi farmer was 5.97%in male, and that of the female was 2.40%. The SP of Yi migrant was 10.25% in male, and that of the female was 6.29%. For Yi people, sex (male versus female, OR = 1.69, 95%CI: 1.02 - 2.81), age (versus the group aged 16- and 25-, group aged 35 to 54: OR = 5.04, 95%CI: 2.93 - 8.69; group aged above 54: OR = 6.19, 95%CI: 3.23 - 11.86), hypertension (versus normal group, borderline hypertension value: OR = 1.61, 95%CI: 1.08 - 2.38; hypertension group: OR = 2.40, 95%CI: 1.37 - 4.22), smoking (OR = 1.55, 95%CI: 1.01 - 2.37), triglyceride (TG) level (OR = 1.65, 95%CI: 1.10 - 2.46) and high-density lipoprotein cholesterol (HDL-C) level (OR = 1.64, 95%CI: 1.13 - 2.37) were the positive factors correlated with T2DM, and drinking (the alcohol volume from 22.67 to 52.50 g/d ) was negative factor (OR = 0.53, 95%CI: 0.30 - 0.95) correlated with T2DM.


CONCLUSIONS
The prevalence of T2DM in Yi immigrants was higher than that in Yi farmers;sex, age, blood pressure, smoking, TG, HDL-C, drinking were influencing factors of T2DM.
Institute of Basic Medical Science Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China.
Bin
B
Wang
Da-Ying
DY
Wei
Chun-Xiu
CX
Wang
Jian-Hua
JH
Zhang
Li
L
Pan
Ming-Ju
MJ
Ma
Fang
F
Xue
Guang-Liang
GL
Shan
D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China / Q000453:epidemiology; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology*; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D012424:Rural Population; D055815:Young Adult