Table 3

Factors associated with knowledge of at least two risk factors for hypertension

FactorsAllMenWomen
Univariable analysis
OR (95% CI)
Multivariable analysis*
OR (95% CI)
Univariable analysis
OR (95% CI)
Multivariable analysis*
OR (95% CI)
Univariable analysis
OR (95% CI)
Multivariable analysis*
OR (95% CI)
Age, year (continuous)0.97 (0.95 to 0.98) 0.97 (0.95 to 0.99)0.97 (0.95 to 0.99) 0.97 (0.95 to 0.99)0.97 (0.94 to 1.00)0.97 (0.94 to 1.00)
Male2.59 (1.69 to 3.96) 2.51 (1.37 to 4.59)
Educational attainment†
 No formal schooling1.001.001.001.001.00
 Some schooling3.59 (2.36 to 5.45) 1.96 (1.16 to 3.32)3.11 (1.69 to 5.72) 2.21 (1.16 to 4.21)2.79 (1.26 to 6.20)
WC above normal‡2.87 (1.84 to 4.47) 1.95 (1.17 to 3.25)2.90 (1.62 to 5.19)3.71 (1.76 to 7.84) 2.62 (1.15 to 5.94)
Physical inactivity1.74 (1.18 to 2.58) 2.35 (1.27 to 4.33)1.89 (1.16 to 3.07) 1.77 (1.01 to 3.12)1.91 (0.94 to 3.89)
Ever smoker0.99 (0.65 to 1.51)0.63 (0.37 to 1.06)0.49 (0.30 to 0.80)0.61 (0.36 to 1.04)
Hypertension status and awareness§
 With hypertension and unaware1.001.001.001.001.001.00
 With hypertension and aware2.10 (1.28 to 3.43) 2.51 (1.44 to 4.39)2.35 (1.24 to 4.45) 2.45 (1.21 to 4.94)2.17 (0.95 to 4.96) 2.66 (1.09 to 6.46)
 With normal blood pressure0.71 (0.44 to 1.13)0.82 (0.49 to 1.37)0.83 (0.48 to 1.45)0.96 (0.52 to 1.74)0.41 (0.15 to 1.08)0.48 (0.17 to 1.31)
  • 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 group comprises 132 who are aware of their hypertension, 218 who are unaware of their hypertension and 291 with normal blood pressure.

  • WC, waist circumference.