Table 1

Thyroid cancers by histological type and other summary data

VariablesCharacteristics
CasesPersonsPerson-years
Population characteristics
 Total41476 4151 694 960
  Women36459 6351 338 952
  Men5016 780356 047
 Birth year
  Before 19306458571 861
  1930–1939359834205 894
  1940–194914125 581578 472
  1950–195922935 764823 611
  1960 and later365115 071
 Work history
  Age first worked
  Unknown9180038 042
  Before age 2023240 444915 539
  20–2415426 829594 424
  25–2912470497 293
  30 and older7263849 701
Doses
 Cumulative occupational radiation doses (average (minimum, maximum))
  Thyroid cancer cases (mGy)45 (0, 310)
  Non-cases (mGy)56 (0, 1625)
 Cumulative radiation doses from diagnostic examinations (average excluding thyroid scans (minimum, maximum))
  Thyroid cancer cases (mGy)23 (0, 350)
  Non-cases (mGy)26 (0, 1853)
 Cumulative radiation doses from diagnostic examinations (average including thyroid scans (minimum, maximum))
  Thyroid cancer cases (mGy)102 (0, 1435)
  Non-cases (mGy)65 (0, 34 313)
 Mean cumulative diagnostic thyroid doses (mGy) by age group exposed (excluding thyroid scan) (minimum, maximum)
  Age < 204.9 (0, 794.9)
  Age 20–3915.6 (0, 1034.6)
  Age 40–595.2 (0, 992.8)
  Age ≥ 600.4 (0, 439.3)
 Mean cumulative diagnostic thyroid doses (mGy) by age group exposed (including thyroid scan) [minimum, maximum]
  Age < 206.6 (0, 3003.4)
  Age 20–3942.7 (0, 8833.5)
  Age 40–5914.8 (0, 34 312.0)
  Age ≥ 600.9 (0, 3997.0)
 Outcomes
  Total thyroid cancers414
  Papillary275
  Follicular19
  Medullary5
  Other/non-classified115