Table 3.
Factors associated with household income
| Unit: USD | |||
|---|---|---|---|
| Variables | Estimate§ | Std. Error | p-value |
| Householder level | |||
| Sex | |||
| Man | 0 | ||
| Woman | −553 | 86.2 | 0.4914 |
| Age | |||
| Under 39 | 0 | ||
| 40 ~ 64 | 329 | 101.2 | 0.7285 |
| Over 65 | −3,887 | 101.2 | 0.0037 |
| Education level | |||
| Below elementary school | 0 | ||
| Middle school | 2,081 | 93.7 | 0.0175 |
| High school | 5,202 | 85.4 | <.0001 |
| above university | 11,689 | 101.7 | <.0001 |
| Marriage status | |||
| Married | 0 | ||
| Unmarried | −7,928 | 153 | <.0001 |
| Divorce, Separated | −1,605 | 77.7 | 0.0271 |
| Household level | |||
| Employment of household | |||
| None | 0 | ||
| >1 person | 4,908 | 43.3 | <.0001 |
| Senior of household | |||
| None | 0 | ||
| >1 person | −2,061 | 99.2 | 0.0261 |
| Member with chronic disease | |||
| None | 0 | ||
| 1 person | −225 | 32.1 | 0.5691 |
| ≥2 people | −1,107 | 56.8 | 0.0351 |
| Year (reference: 2007) | |||
| 2008 | 1,408 | 65.6 | 0.0216 |
| 2009 | 1,723 | 101.7 | 0.0698 |
| 2010 | 197 | 76.8 | 0.7836 |
| 2011 | 103 | 80.4 | 0.8914 |
| Case (reference: non-occurrence household) | |||
| Occurrence household | −1,784 | 95.7 | 0.0458 |
| Interaction term (year x Case) | |||
| 2008 | −1,737 | 75.7 | 0.0142 |
| 2009 | −2,357 | 117.3 | 0.0317 |
| 2010 | −1,426 | 86.4 | 0.0840 |
| 2011 | −663 | 92.4 | 0.4422 |
§ Adjusted odds ratio from multiple regression analysis with all of the variables in Table 1