Factors | Univariate logistic regression analysis | Multivariate logistic regression analysis | ||
---|---|---|---|---|
Crude OR (95% CI) | p value | Adjusted ORa(95% CI) | p value | |
Sex | ||||
Male | 1 (reference) | 1 (reference) | ||
Female | 1.02 (0.77-1.35) | 0.889 | 0.97 (0.73-1.29) | 0.857 |
Age | ||||
75-79 | 1 (reference) | 1 (reference) | ||
80-84 | 1.46 (1.07-2.00) | 0.016 | 1.52 (1.11-2.09) | 0.009 |
≥ 85 | 1.70 (1.15-2.51) | 0.007 | 1.73 (1.17-2.57) | 0.007 |
Income | ||||
High | 1 (reference) | 1 (reference) | ||
Middle | 1.40 (0.99-1.98) | 0.055 | 1.43 (1.00-2.03) | 0.048 |
Low | 1.43 (1.04-1.98) | 0.030 | 1.38 (0.95-2.02) | 0.093 |
Residential area | ||||
Urban | 1 (reference) | 1 (reference) | ||
Rural | 1.26 (0.89-1.78) | 0.191 | 1.23 (0.86-1.76) | 0.256 |
Health insurance | ||||
Medicare | 1 (reference) | 1 (reference) | ||
Medical aid | 1.21 (0.76-1.92) | 0.423 | 1.09 (0.63-1.88) | 0.758 |
Charlson comorbidity index | ||||
< 6 | 1 (reference) | 1 (reference) | ||
≥ 6 | 2.34 (1.33-4.13) | 0.003 | 2.56 (1.43-4.55) | 0.001 |
Number of prescribed medications | ||||
≥ 4 | 1 (reference) | 1 (reference) | ||
< 4 | 1.50 (1.05-2.13) | 0.024 | 1.54 (1.08-2.21) | 0.000 |