Table 3.
Total, natural direct and natural indirect effects for depressive symptoms using Baron and Kenny and Inverse Odds Ratio Weighting (IORW) estimators.
| Treatment effectsa,b (N = 16,718) | Baron and Kenny |
IORW |
||
|---|---|---|---|---|
| β | 95% CIc | β | 95% CIc | |
| Totald | -0.35 (-0.38, -0.32) | |||
| Natural direct | -0.31 | (-0.35, -0.28) | -0.25 | (-0.35, -0.16) |
| Natural Indirect | -0.03 | (-0.04, -0.02) | -0.10 | (-0.18, -0.01) |
a
Exposure: z-scored years of schooling with 1 SD = 3 years, Mediator: z-scored literacy score with 1 SD = 2 on a 10-point scale.
b
Covariates: age, sex, race/ethnicity, self-rated child health status, and five indicators of early life SES combined into a single scale including mother’s and father’s educational attainment, father’s occupational status, birth in southern US, and rural residence during childhood.
c
Obtained using a nonparametric bootstrap.
d
Estimation of total effects is the same for Baron and Kenny and inverse odds ratio weighting.