Urban, semi-urban and rural difference in the prevalence of metabolic syndrome in Shaanxi province, northwestern China: a population-based survey

Table 4 Odds ratios for metabolic syndrome among rural and semi-urban as compared to urban participants in Shaanxi province, northwestern China

Variable	Urban	Semi-urban				Rural
Variable	Ref.	x ²	OR	95% CI	Pvalue	x ²	OR	95% CI	Pvalue
Model 0	1.000	0.002	0.995	0.806-1.228	0.961	3.862	1.237	1.001-1.530	0.049
Model 1	1.000	0.066	1.029	0.824-1.285	0.798	4.859	1.288	1.028-1.613	0.028
Model 2	1.000	0.111	1.038	0.831-1.297	0.739	4.779	1.286	1.026-1.610	0.029
Model 3	1.000	0.088	1.034	0.829-1.293	0.767	4.419	1.276	1.017-1.601	0.036

OR: odds ratio; CI: confidence interval. The covariables in each step enter the model by a forward method. Model 0: unadjusted; Model 1: adjusted for age, sex and ethnic; Model 2: further adjusted for educational level, yearly family income, cigarette smoking, alcohol drinking and physical activities; Model 3: further adjusted for family history of diabetes and family history of hypertension.

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