Table A1.
Hypothetical cohort data consisting of person-time, deaths, and negative controls.
| Occupational cohort | Extl ref. | Summary statistics | Neg. control | |||||
|---|---|---|---|---|---|---|---|---|
| Age (k) |
Deaths (Y1k) |
P-yrs (×103) (T1k) |
Death Rate (Y1k/T1k) |
Ref rate (IRk) |
Rate ratio [Y1k/T1k]/IRk |
Weight* | Obs (Nk) |
Ref rate (JRk) |
| 55–59 | 6 | 1.200 | 5.000 | 3.375 | 1.48 | 0.030831 | 9 | 10.12 |
| 60–64 | 22 | 2.340 | 9.402 | 7.013 | 1.34 | 0.124924 | 14 | 8.92 |
| 65–69 | 98 | 3.750 | 26.133 | 20.493 | 1.28 | 0.584957 | 110 | 46.00 |
| 70–74 | 48 | 0.975 | 49.231 | 34.931 | 1.41 | 0.259287 | 60 | 87.33 |
| Total | 174 | 8.265 | 1.32* | 1.0 | 193 | |||
*
Weighted average of stratum-specific rate ratios, where weight for stratum k is T1k IRk/ΣT1kIRk.