TABLE 4.
Standardized Mortality Ratios and Standardized Rate Ratios for Select Underlying Causes of Death, Stratified by Presence of Pleural and Parenchymal Abnormalities on Chest Radiographs (CXR)
| Cause | CXR Category | Obs | Exp | SMR (95% CI) | SRR (95% CI) |
|---|---|---|---|---|---|
| Lung cancer | Pleural | 44 | 32.98 | 1.33 (0.97, 1.79) | 1.73 (1.15, 2.61) |
| No pleural | 78 | 104.01 | 0.75 (0.59, 0.94) | 1 | |
| Parenchymal | 14 | 3.88 | 3.61 (1.97, 6.06) | 3.94 (2.10, 7.38) | |
| No parenchymal | 108 | 133.11 | 0.81 (0.67, 0.98) | 1 | |
| Mesothelioma | Pleural | 6 | 0.75 | 8.27 (3.04, 18.01) | 2.39 (0.15, 28.14) |
| No pleural | 7 | 1.68 | 4.18 (1.68, 8.60) | 1 | |
| Parenchymal | 0 | 0.09 | 0 (0.00, 41.75) | NR | |
| No parenchymal | 13 | 2.31 | 5.62 (2.99, 9.61) | 1 | |
| Asbestosis | Pleural | 41 | 0.18 | 230.74 (165.56, 313.03) | 2.52 (1.39, 8.93) |
| No pleural | 21 | 0.3 | 69.07 (42.74, 105.58) | 1 | |
| Parenchymal | 9 | 0.02 | 383.78 (175.49, 728.53) | 38.62 (6.16, 241.24) | |
| No parenchymal | 53 | 0.45 | 115.65 (86.62, 151.27) | 1 |
Statistically significant (P < 0.05) SMRs and SRRs are in bold font. CI, confidence interval; SMRs, standardized mortality ratios; SRRs, standardized rate ratios. Person-years for each CXR category: pleural abnormality 14,162; no pleural abnormality 101,684; parenchymal abnormality 1,723; no parenchymal abnormality 114,123.