Table 4

ERRs per 100 mGy for cancer incidence by cumulative organ doses by study populations in South Korean diagnostic medical radiation workers, 1996–2017

Cancer sites
(ICD-10 code)
All workers
(n=93 920)
Worker employed
≥1 years
(n=75 785)
Workers started job
≥1996
(n=80 776)
Workers had
≥1 mSv
(n=45 862)
All cancers combined (C00-C96)
 Cases3392296223912010
 ERR (95% CI)*0.15 (−0.20 to 0.50)0.15 (−0.20 to 0.51)0.93 (−0.60 to 2.46)0.20 (−0.18 to 0.57)
Solid cancers (C00-C81)
 Cases3220281322681903
 ERR (95% CI)0.15 (−0.20 to 0.51)0.17 (−0.20 to 0.53)0.79 (−0.77 to 2.35)0.21 (−0.18 to 0.60)
Solid cancers other than thyroid
 Cases2234199214561384
 ERR (95% CI)0.24 (−0.15 to 0.64)0.26 (−0.15 to 0.66)0.92 (−1.05 to 2.90)0.35 (−0.10 to 0.79)
Solid cancers other than thyroid and lung
 Cases2075184513601281
 ERR (95% CI)0.17 (−0.24 to 0.57)0.18 (−0.23 to 0.59)0.96 (−1.08 to 3.00)0.22 (−0.21 to 0.66)
All-haematopoietic cancers (C81-C96)
 Cases172149123107
 ERR (95% CI)0.09 (−2.02 to 2.20)−0.12 (−2.02 to 1.99)3.80 (−5.24 to 12.9)0.03 (−2.09 to 2.15)
Stomach (C16)
 Cases366332229241
 ERR (95% CI)−0.38 (−0.80 to 0.04)−0.38 (−0.77 to 0.01)−0.40 (−2.36 to 1.56)−0.38 (−1.05 to 0.30)
Colorectal (C18-C20)
 Cases351317228221
 ERR (95% CI)0.38 (−0.67 to 1.43)0.39 (−0.68 to 1.46)−0.38 (−3.83 to 3.07)0.34 (−0.73 to 1.42)
Liver (C22)
 Cases194184112138
 ERR (95% CI)1.39 (−0.55 to 3.33)1.37 (−0.57 to 3.31)−0.35 (−5.13 to 4.43)1.34 (−0.67 to 3.35)
Pancreas (C25)
 Cases61514034
 ERR (95% CI)−0.38 (−1.75 to 1.00)−0.38 (−1.78 to 1.02)−0.36 (−9.10 to 8.38)−0.13 (−2.21 to 1.94)
Lung (C33-C34)
 Cases15914796103
 ERR (95% CI)1.15 (−0.71 to 3.02)1.21 (−0.71 to 3.12)0.45 (−7.14 to 8.05)2.25 (−0.60 to 5.09)
Non-melanoma skin (C44)
 Cases38342728
 ERR (95% CI)−0.38 (−2.17 to 1.41)−0.37 (−2.59 to 1.84)21.4 (−15.8 to 58.5)−0.37 (−2.65 to 1.91)
Female breast (C50)
 Cases326270245171
 ERR (95% CI)−0.38 (−0.68 to –0.08)−0.37 (−1.11 to 0.37)−1.12 (−4.78 to 2.54)−0.33 (−1.55 to 0.89)
Prostate (C61)
 Cases1561359194
 ERR (95% CI)−0.25 (−1.01 to 0.51)−0.27 (−1.01 to 0.48)5.47 (−8.56 to 19.5)−0.25 (−1.02 to 0.51)
Kidney (C64)
 Cases1221088274
 ERR (95% CI)−0.26 (−1.74 to 1.23)−0.35 (−1.71 to 1.01)2.91 (−6.22 to 12.0)−0.24 (−1.77 to 1.30)
Bladder (C67)
 Cases62533445
 ERR (95% CI)0.64 (−1.62 to 2.90)0.61 (−1.65 to 2.87)11.4 (−16.2 to 39.1)0.62 (−1.70 to 2.93)
Brain and CNS (C70-72)
 Cases43393023
 ERR (95% CI)−0.29 (−3.14 to 2.55)−0.30 (−3.08 to 2.48)−0.37 (−10.6 to 9.82)−0.31 (−2.96 to 2.34)
Thyroid (C73)
 Cases986821812519
 ERR (95% CI)−0.31 (−1.24 to 0.62)−0.29 (−1.27 to 0.70)0.76 (−1.87 to 3.40)−0.32 (−1.25 to 0.60)
NHL (C82-C85, C96)
 Cases61554241
 ERR (95% CI)−0.41 (−2.88 to 2.07)−0.55 (−2.08 to 0.99)7.16 (−11.7 to 26.0)−0.55 (−2.08 to 0.99)
Leukaemia (C91-C95)
 Cases58494532
 ERR (95% CI)−0.54 (−3.54 to 2.45)−0.55 (−1.49 to 0.39)2.13 (−11.9 to 16.2)−0.50 (−3.98 to 2.98)
  • *Adjusted for attained age (<25, 5-year intervals from the age of 25–84, ≥85 years), sex, birth year (<1960, 1960–1969, 1970–1979, ≥1980) and years of employment duration (<1, 1–5, 5–10, ≥10).

  • CNS, central nervous system; ERR, excess relative risk; ICD-10, International Classification of Diseases and Related Health Problems, 10th Revision; NHL, non-Hodgkin’s lymphoma.