Association between taking antihypertensive medication and knowledge of at least two risk factors for hypertension
| Factors | All | Men | Women |
| Multivariable analysis* OR (95% CI) | Multivariable analysis* OR (95% CI) | Multivariable analysis* OR (95% CI) | |
| Age, year (continuous) | 0.97 (0.95 to 0.99) | 0.97 (0.95 to 0.99) | 0.97 (0.93 to 1.00) |
| Male | 2.64 (1.44 to 4.86) | – | – |
| Educational attainment† | |||
| No formal schooling | 1.00 | 1.00 | |
| Some schooling | 1.94 (1.14 to 3.30) | 2.10 (1.10 to 4.02) | – |
| WC above normal‡ | 1.86 (1.12 to 3.09) | – | 2.39 (1.05 to 5.43) |
| Physical inactivity | 1.59 (0.99 to 2.54) | 1.74 (0.99 to 3.07) | – |
| Ever smoker | 0.62 (0.37 to 1.05) | 0.61 (0.36 to 1.05) | – |
| Hypertension status and medication§ | |||
| With hypertension and not on medication | 1.00 | 1.00 | 1.00 |
| With hypertension and on medication | 3.36 (1.78 to 6.31) | 3.09 (1.34 to 7.11) | 3.62 (1.38 to 9.45) |
| With normal blood pressure | 0.75 (0.46 to 1.21) | 0.85 (0.49 to 1.50) | 0.90 (0.12 to 7.03) |
Above normal refers to WC >90 cm in men and >80 cm in women.
Bold values indicate statistically significant
*Final model from backward stepwise selection method that included age, sex, traditional social group, educational attainment, occupation, waist circumference, tobacco use, alcohol consumption, physical activity, health insurance, last time blood pressure (BP) was measured and distance travelled to health services.
†Nine observations missing.
‡Four observations missing.
§This includes 75 participants with hypertension and on medication, 275 participants with hypertension and not on medication and 291 participants with normal blood pressure.
WC, waist circumference.