Table 2.
Results of bivariate and multivariate logistic regression
| Variables | Crude OR (95% CI) | Adjusted OR (95% CI) |
|---|---|---|
| Demographic variables | ||
| Sex of household head | ||
| Male (ref.) | 1 | 1 |
| Female | 0.89 (0.72 to 1.10) | 1.05 (0.83 to 1.32) |
| Age of household head | ||
| 15–45 (ref.) | 1 | 1 |
| 46–65 | 1.00 (0.85 to 1.18) | 0.96 (0.80 to 1.15) |
| 66 and above | 0.90 (0.73 to 1.10) | 0.98 (0.78 to 1.24) |
| Socioeconomic variables | ||
| Education status of household head | ||
| Illiterate (ref.) | 1 | 1 |
| Primary school | 1.30 (1.04 to 1.63) | 1.12 (0.87 to 1.44) |
| Secondary school | 1.32 (1.06 to 1.65) | 1.05 (0.81 to 1.37) |
| High school | 1.80 (1.44 to 2.25) | 1.30 (0.98 to 1.72) |
| Academic degree | 1.84 (1.43 to 2.38) | 1.27 (0.91 to 1.77) |
| Wealth index of households | ||
| Poorest (ref.) | 1 | 1 |
| Poor | 1.48 (1.12 to 1.96) | 1.31 (0.98 to 1.75) |
| Middle | 1.83 (1.39 to 2.43) | 1.52 (1.13 to 2.04) |
| Rich | 2.04 (1.55 to 2.68) | 1.60 (1.18 to 2.17) |
| Richest | 2.15 (1.64 to 2.84) | 1.60 (1.16 to 2.20) |
| Ecological variables | ||
| Geographical area | ||
| Urban (ref.) | 1 | 1 |
| Rural | 0.59 (0.50 to 0.69) | 0.73 (0.63 to 0.87) |
| Province category based on HDI | ||
| Low (ref.) | 1 | 1 |
| Middle | 1.33 (1.08 to 1.63) | 1.23 (1.02 to 1.51) |
| High | 2.19 (1.78 to 2.68) | 1.83 (1.48 to 2.27) |
OR is odds ratio and HDI is the human development index
Crude OR represents the odds ratio in a bivariate model with a single predictor
Adjusted OR represents odds ratios in the multivariate model with all predictors entered simultaneously into the model