Table 3.
Risk analysis of incidentally and non-incidentally detected thyroid cancer between periods of study in members of the PSHI (2003-2012).
| Incidentally detected thyroid cancer | Non-incidentally detected thyroid cancer | |||
|---|---|---|---|---|
| Period of study | Crude cumulative incidencea (95%CI) | Age standardized cumulative incidencea (95% CI) | Crude cumulative incidencea (95%CI) | Age standardized cumulative incidencea (95% CI) |
|
| ||||
| 2003-2007 | 1.1 (0.36-2.61) | 0.7 (0.14-1.96) | 8 (5.63-11.1) | 6 (3.97-8.77) |
| 2008-2012 | 6.1 (4.33-8.33) | 4.1 (2.65-5.95) | 15 (12.2-18.3) | 10.6 (8.25-13.5) |
|
| ||||
| Relative risk (95% CI) | 6.06 (1.84-20) | 1.76 (1.13-2.75) | ||
aPer 100,000 affiliates.