Table 4 Results of the weighted approach mediation analysis based on the counterfactual framework
Income level | Model A | Model B | ||
|---|---|---|---|---|
Adjusted HR (95% CI) | Mediation proportion (%) | Adjusted HR (95% CI) | Mediation proportion (%) | |
High income | Reference | Reference | ||
Middle income: natural direct effect | 1.14 (1.09–1.18) | 1.13 (1.09–1.18) | ||
Low income: natural direct effect | 1.18 (1.13–1.22) | 1.16 (1.11–1.21) | ||
Medical Aid beneficiaries: natural direct effect | 1.56 (1.48–1.64) | 1.59 (1.51–1.67) | ||
Middle income: natural indirect effect | 1.02 (0.98–1.06) | 1.02 (0.98–1.06) | ||
Low income: natural indirect effect | 1.03 (0.99–1.07) | 1.04 (1.00–1.08) | ||
Medical Aid beneficiaries: natural indirect effect | 1.13 (1.08–1.18) | 26.6 | 1.10 (1.05–1.15) | 21.1 |