Table 2.
Relative odds of hypertension in Yi people, Yi Migrant Study, 1996–2015a.
| Variable | Model 1 | Model 2b | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | Yi farmers | Yi migrants | Total | Yi farmers | Yi migrants | |||||||
| OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | |
| BMIc category | ||||||||||||
| Underweight (BMI <18.5) | 0.51 | 0.34, 0.68 | 0.50 | 0.32, 0.75 | 0.52 | 0.27, 0.93 | 0.51 | 0.34, 0.68 | 0.50 | 0.32, 0.75 | 0.52 | 0.27, 0.93 |
| Normal weight (BMI 18.5–23.9) | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| Overweight/obesity (BMI ≥24.0) | 2.89 | 2.62, 3.59 | 2.86 | 2.22, 3.67 | 2.93 | 2.37, 3.63 | 2.89 | 2.62, 3.59 | 2.86 | 2.22, 3.67 | 2.93 | 2.37, 3.63 |
| Time period | ||||||||||||
| Period 1 (1996) | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent | 0.72 | 0.55, 0.94 | 0.77 | 0.48, 1.19 | 0.62 | 0.44, 0.87 |
| Period 2 (2007–2008) | 1.39 | 1.07, 1.83 | 1.30 | 0.85, 2.08 | 1.61 | 1.15, 2.29 | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| Period 3 (2015) | 1.92 | 1.47, 2.52 | 2.18 | 1.41, 3.49 | 1.82 | 1.30, 2.59 | 1.38 | 1.17, 1.63 | 1.67 | 1.31, 2.15 | 1.13 | 0.89, 1.43 |
BMI: body mass index; OR: odds ratio; CI: confidence interval. a: all models were adjusted for age, sex, education, and smoking. b: model 2 rearranged period 2 as reference group and otherwise had the same parameters as model 1. c: weight (kg)/height (m)2.