Table 7. Factors associated with the prevalence of hypertension from multivariate logistic regression models in age group 80– (N = 118).
| Variables | n | Prevalence of HBP (%) | OR (95% CI)a | OR (95% CI)b |
| Gender: Female | 79 | 49.4 | – | 1.000(reference) |
| Male | 39 | 59.0 | – | 0.535(0.128, 2.237) |
| Body weight: normal weight | 65 | 53.8 | 1.000 (reference) | 1.000(reference) |
| Leanness | 43 | 51.2 | 0.917(0.422, 1.992) | 0.872(0.363, 2.096) |
| Overweight | 7 | 42.9 | 0.620(0.127, 3.023) | 0.407(0.063, 2.630) |
| Obesity | 3 | 66.7 | 1.987(0.169, 23.372) | 1.656(0.120, 22.941) |
| Education level: No school | 76 | 48.7 | 1.000 (reference) | 1.000(reference) |
| Primary school | 9 | 66.7 | 1.869(0.405, 8.628) | 3.417(0.642, 18.177) |
| Junior high school | 23 | 56.5 | 1.139 (0.349, 3.717) | 1.796(0.460, 7.013) |
| Senior high school | 7 | 57.1 | 1.099 (0.176, 6.862) | 1.586(0.179, 14.041) |
| Junior college and above | 3 | 66.7 | 1.986 (0.170, 23.163) | c |
| Diabetes mellitus: no | 117 | 53.0 | 1.000 (reference) | 1.000(reference) |
| Yes | 1 | 0 | c | c |
| Cigarette smoking: no | 85 | 49.4 | 1.000 (reference) | 1.000(reference) |
| Smoking | 33 | 60.6 | 1.390(0.456, 4.240) | 1.414(0.408, 4.899) |
| Alcohol consumption: no | 99 | 46.5 | 1.000 (reference) | 1.000(reference) |
| Yes | 19 | 84.2 | 5.992(1.637, 21.935) | 8.407(2.161, 32.707) |
| Family history of HBP: no | 84 | 45.2 | 1.000 (reference) | 1.000(reference) |
| Yes | 34 | 70.6 | 2.788(1.165, 6.672) | 4.110(1.557, 10.848) |
95%CI, 95% confidence interval; HBP, high blood pressure; OR, odds ratio;
a
Adjusted for gender only; b Adjusted for all other variables in the table; c the value is not applicable because the number is too small.