Table 2.

Odds of hypertension in survey 2 relative to odds for hypertension in survey 1

	OR (95% CI)
	Rural	Urban
Unadjusted	3.2 (2.7 to 3.8)	2.3 (2.0 to 2.6)
Model 1: Adjusted for age	3.4 (2.9 to 4.0)	2.6 (2.3 to 2.9)
Model 2: Adjusted for age and gender	3.3 (2.8 to 3.9)	2.6 (2.3 to 2.9)
Model 3: Adjusted for age, gender and obesity	3.1 (2.6 to 3.6)	2.6 (2.2 to 2.9)
Model 4: Adjusted for age, gender and WHR	3.1 (2.6 to 3.6)	2.4 (2.1 to 2.8)
Model 5: Adjusted for age, gender, obesity and WHR	2.9 (2.4 to 3.4)	2.4 (2.1 to 2.8)
Model 6: Adjusted for age, gender, obesity, WHR and diabetes	3.3 (2.6 to 4.1)	2.4 (2.1 to 2.7)
Model 7: Adjusted for age, gender, obesity, WHR, diabetes and alcohol use	3.1 (2.4 to 4.0)	2.3 (2.0 to 2.7)
Model 8: Model 7 stratified by age groups
Age 35–44 years	5.0 (3.0 to 8.4)	2.7 (2.1 to 3.4)
Age 45–54 years	1.6 (1.2 to 2.1)	2.1 (1.6 to 2.6)
Age 55–64 years	2.1 (1.6 to 2.9)	2.6 (1.9 to 3.4)

Obesity: BMI ≥30 kg/m²; diabetes: FPG ≥126 mg/dL or on medication; abdominal obesity: WHR >0.90 for men and WHR >0.85 for women; p value for interaction between time and age (rural), p=0.0001; p-value for interaction between time and age (urban), p=0.0008.

BMI, body mass index; FPG, fasting plasma glucose; WHR, waist to hip ratio.