Table 2. Causal interventional effects of aircraft noise levels in terms of odds ratio (OR) for poor/fair self-reported health status.
| 50–54 vs < 50 dBA | 55–59 vs < 50 dBA | ≥ 60 vs < 50 dBA | |
|---|---|---|---|
| OR (95%CI1) | OR (95% CI1) | OR (95%CI1) | |
| Total interventional effect | 1.08 (0.90 to 1.45) | 1.16 (0.84 to 2.03) | 1.25 (1.06 to 2.08) |
| Direct interventional effect | 1.03 (0.82 to 1.37) | 1.05 (0.71 to 1.76) | 1.08 (0.79 to 1.80) |
| Indirect interventional effect | 1.05 (0.98 to 1.22) | 1.10 (0.96 to 1.46) | 1.16 (1.03 to 1.52) |
| Mediated proportion2 | 63% | 64% | 66% |
1Confidence intervals obtained with a bootstrap of 7,500 resamples (convergence rate: 3,804/7,500) using the bootstrap bias correction method.
2 Mediated proportion = = log(ORIIE)⁄log(ORTIE where IIE corresponds to indirect interventional effect and TIE to total interventional effect.