Relative index of inequality (RII) * and 95 % confidence intervals (in parentheses) of income and wealth on GHQ depression and poor self rated health among men and women
| Age and baseline health adjusted‡ | Fully adjusted§ | |||||
|---|---|---|---|---|---|---|
| Number of observations† | Age adjusted RII (95% CI) | RII (95% CI) | % reduction in excess morbidity¶ | RII (95% CI) | % Reduction in excess morbidity¶ | |
| *The RII is the relative increase in morbidity from the top to the bottom of the income ladder obtained from a logistic regression model, for example, a RII of 3.00 indicates that the odds ratio of poor health is three among those with the lowest as compared with the highest income (see methods). | ||||||
| †Number of observations vary between the analyses for different income and wealth indicators. However, when analyses were restricted to a sample that included participants with full information on personal income, household income, and wealth the age adjusted odds ratios differed from those presented in this table by about 5%. See also footnote * in table 1. | ||||||
| ‡Adjusted for age, baseline self rated health, longstanding illness, 30-item GHQ score and its squared value. | ||||||
| §Adjusted for age, baseline self rated health, longstanding illness, 30-item GHQ score and its squared value, employment status, number of economically active adults and all persons in the household, number of children, marital status, education, and employment grade. | ||||||
| ¶Percentage reduction in excess morbidity between the current model and the age adjusted model, for example, for GHQ depression among men reduction in excess morbidity for the fully adjusted model is: ((2.16−1.29)/(2.16−1.00))×100. | ||||||
| Men | ||||||
| GHQ depression | ||||||
| Personal income | 4908 | 2.16 (1.62 to 2.89) | 1.45 (1.06 to 1.99) | 61 | 1.29 (0.79 to 2.10) | 75 |
| Household income | 4229 | 2.30 (1.67 to 3.17) | 1.57 (1.11 to 2.22) | 56 | 1.28 (0.80 to 2.07) | 78 |
| Household wealth | 4838 | 3.26 (2.36 to 4.49) | 2.42 (1.71 to 3.43) | 37 | 2.04 (1.37 to 3.04) | 54 |
| Poor self rated health | ||||||
| Personal income | 4953 | 2.13 (1.72 to 2.65) | 1.61 (1.28 to 2.02) | 46 | 1.24 (0.88 to 1.77) | 79 |
| Household income | 4263 | 2.22 (1.75 to 2.81) | 1.74 (1.35 to 2.23) | 39 | 1.27 (0.91 to 1.78) | 78 |
| Household wealth | 4873 | 3.15 (2.45 to 4.05) | 2.51 (1.93 to 3.29) | 30 | 2.00 (1.49 to 2.70) | 53 |
| Women | ||||||
| GHQ depression | ||||||
| Personal income | 2040 | 2.08 (1.34 to 3.22) | 1.66 (1.02 to 2.69) | 39 | 1.41 (0.67 to 2.96) | 62 |
| Household income | 1746 | 3.36 (2.04 to 5.52) | 2.86 (1.65 to 4.93) | 21 | 2.46 (1.13 to 5.32) | 38 |
| Household wealth | 1915 | 2.20 (1.44 to 3.37) | 1.86 (1.17 to 2.97) | 28 | 1.68 (0.95 to 2.97) | 43 |
| Poor self rated health | ||||||
| Personal income | 2077 | 2.14 (1.50 to 3.07) | 1.52 (1.04 to 2.24) | 54 | 0.89 (0.49 to 1.59) | 110 |
| Household income | 1765 | 2.29 (1.55 to 3.39) | 1.61 (1.06 to 2.45) | 53 | 1.25 (0.69 to 2.27) | 81 |
| Household wealth | 1941 | 3.74 (2.62 to 5.36) | 2.98 (2.04 to 4.37) | 28 | 3.05 (1.92 to 4.84) | 25 |