Table 2.
Hazard ratios for first birth according to receipt of radioactive iodine treatment (RAI)
| N women | N births | Unadjusted HR | Adjusted HRa | |
|---|---|---|---|---|
| Overall | ||||
|
| ||||
| No RAI | 1108 | 188 | 1 | 1 |
| RAI | 1252 | 218 | 1.02 (0.84, 1.24) | 1.00 (0.82, 1.23) |
|
| ||||
| Age at diagnosis | ||||
|
| ||||
| 15–24 | ||||
| No RAI | 173 | 60 | 1 | 1 |
| RAI | 222 | 51 | 0.62 (0.43, 0.91) | 0.71 (0.48, 1.05) |
| 25–29 | ||||
| No RAI | 230 | 68 | 1 | 1 |
| RAI | 270 | 81 | 1.08 (0.78, 1.49) | 1.06 (0.76, 1.50) |
| 30–34 | ||||
| No RAI | 305 | 40 | 1 | 1 |
| RAI | 341 | 68 | 1.47 (0.99, 2.17) | 1.45 (0.97, 2.15) |
| 35–39 | ||||
| No RAI | 400 | 20 | 1 | 1 |
| RAI | 419 | 18 | 0.85 (0.45, 1.60) | 0.76 (0.39, 1.48) |
|
| ||||
| Stage | ||||
|
| ||||
| Localized | ||||
| No RAI | 908 | 149 | 1 | 1 |
| RAI | 762 | 131 | 1.01 (0.80, 1.28) | 1.01 (0.80, 1.28) |
| Regional/distant | ||||
| No RAI | 178 | 33 | 1 | 1 |
| RAI | 478 | 85 | 1.01 (0.68, 1.52) | 1.00 (0.67, 1.49) |
a
Adjusted for age at diagnosis and stage