Table 3

Thyroid cancer and papillary thyroid cancer, by time since exposure, exposure age and sex, using cumulative diagnostic thyroid radiation dose

Model numberStatistical modelAll thyroid cancerPapillary thyroid cancer
ERR/Gy (+95% CI)ERR/Gy (+95% CI)
 1Linear thyroid dose2.29 (−0.91 to 7.01)4.15 (−0.39 to 11.27)
P value0.191*0.080*
 2Time since exposure 5–9 years−1.10 (−24.84 to 39.52)3.24 (−26.16 to 61.98)
Time since exposure 10–14 years−6.95 (−24.49 to 17.05)−12.03 (−30.21 to 18.06)
Time since exposure 15+ years3.49 (−0.55 to 9.07)5.27 (0.11 to 13.22)
Heterogeneity p value0.578†0.441†
 3Exposure age 0–19 years4.57 (−3.08 to 16.19)6.75 (−3.36 to 23.24)
Exposure age 20–39 years0.15 (−3.98 to 6.24)3.31 (−2.69 to 12.42)
Exposure age 40–59 years8.13 (−2.51 to 28.05)4.47 (−4.24 to 29.65)
Exposure age 60+ years−36.22 (<−100 to >100)−18.23 (<−100 to >100)
Heterogeneity p value0.724†0.971†
 4Men3.48 (−2.62 to 20.85)2.60 (−6.42 to 30.96)
Women2.05 (−1.33 to 7.22)4.35 (−0.45 to 12.14)
Heterogeneity p value0.797†0.848†
  • Stratification is by sex and year of birth (<1900, 1900–1909, 1910–1919, 1920–1929, 1930–1939, 1940–1949, 1950–1959, 1960+).

  • *P value for improvement in fit compared with null model, that is, significance of the departure of the ERR/Gy from 0.

  • †P value for improvement in fit compared with simple linear model 1.

  • ERR, excess relative risk coefficient.