Table II.
Meta-analysis results on SMR and heterogeneity analysis for solid cancers of interest in nuclear industry workers.
| SMR (95% CI) | Heterogeneity analysis | |||||
|---|---|---|---|---|---|---|
| Category | Fixed-effects model | Random-effects model | Q-value | P-value | df | I2 (%) |
| Total cancer | 0.87 (0.860.88) | 0.88 (0.830.94) | 376.35 | 0.00 | 19 | 95.0 |
| Solid cancer | 0.85 (0.840.87) | 0.80 (0.710.90) | 92.45 | 0.00 | 5 | 94.6 |
| Lung cancer | 0.89 (0.800.98) | 0.89 (0.800.98) | 267.25 | 0.00 | 20 | 92.5 |
| Brain and CNS | 1.05 (0.961.14) | 1.09 (0.981.21) | 18.16 | 0.31 | 16 | 11.9 |
| Liver cancer | 0.73 (0.680.78) | 0.75 (0.670.84) | 20.18 | 0.17 | 15 | 25.7 |
| Stomach cancer | 0.85 (0.800.91) | 0.51 (0.750.97) | 33.18 | 0.01 | 17 | 48.8 |
| Colorectal cancer | 0.91 (0.870.95) | 0.93 (0.841.04) | 45.72 | 0.00 | 16 | 65.0 |
| Kidney | 0.93 (0.851.01) | 0.93 (0.851.01) | 13.86 | 0.68 | 17 | 0.0 |
| Bladder | 0.87 (0.790.95) | 0.96 (0.801.17) | 40.48 | 0.00 | 16 | 60.5 |
| Prostate | 1.00 (0.941.06) | 0.99 (0.911.08) | 23.69 | 0.07 | 15 | 36.7 |
SMR, standard mortality ratio; CI, confidence interval; df, degree of freedom; CNS, central nervous system.