Table 3

Baseline SIRs and RRs of cancer incidence by radiation dose in South Korean diagnostic medical radiation workers, 1996–2017

Cancer sites
(ICD-10 code)
Baseline SIRs (95% CI)*RRs (95% CI) by cumulative badge dose categories (mSv)P trend
<11–55–20≥20
All cancers combined (C00-C96)1.00 (0.95 to 1.05)1.0 (ref)0.96 (0.88 to 1.05)0.97 (0.88 to 1.06)0.94 (0.86 to 1.04)0.753
 Cases1382776620614
Solid cancers (C00-C81)0.99 (0.94 to 1.05)1.0 (ref)0.95 (0.87 to 1.04)0.97 (0.88 to 1.06)0.94 (0.85 to 1.04)0.779
 Cases1317734588581
Solid cancers other than thyroid0.88 (0.83 to 0.95)1.0 (ref)0.89 (0.79 to 0.99)0.91 (0.81 to 1.03)0.99 (0.89 to 1.11)0.511
 Cases850474406504
Solid cancers other than thyroid and lung0.91 (0.85 to 0.97)1.0 (ref)0.89 (0.79 to 1.00)0.93 (0.82 to 1.05)1.02 (0.91 to 1.14)0.537
 Cases794443382456
All-haematopoietic cancers (C81-C96)1.20 (0.94 to 1.53)1.0 (ref)1.04 (0.70 to 1.53)0.94 (0.62 to 1.44)0.99 (0.65 to 1.50)0.788
 Cases65423233
Stomach (C16)0.71 (0.59 to 0.84)1.0 (ref)1.03 (0.78 to 1.35)0.94 (0.70 to 1.26)0.93 (0.70 to 1.23)0.288
 Cases125887083
Colorectal (C18-C20)0.98 (0.83 to 1.17)1.0 (ref)0.85 (0.64 to 1.13)0.85 (0.63 to 1.15)1.01 (0.77 to 1.33)0.482
 Cases130736286
Liver (C22)0.54 (0.42 to 0.71)1.0 (ref)0.92 (0.61 to 1.38)0.95 (0.63 to 1.45)1.38 (0.96 to 1.97)0.484
 Cases56393663
Pancreas (C25)1.32 (0.90 to 1.92)1.0 (ref)0.57 (0.27 to 1.17)0.64 (0.31 to 1.32)0.67 (0.35 to 1.27)0.795
 Cases27101014
Lung (C33-C34)0.64 (0.49 to 0.83)1.0 (ref)0.87 (0.56 to 1.36)0.73 (0.46 to 1.19)0.92 (0.63 to 1.36)0.518
 Cases56312448
Non-melanoma skin (C44)0.69 (0.37 to 1.28)1.0 (ref)1.66 (0.69 to 4.00)1.79 (0.73 to 4.41)1.49 (0.61 to 3.67)0.785
 Cases101099
Female breast (C50)1.11 (0.95 to 1.30)1.0 (ref)1.00 (0.75 to 1.34)1.00 (0.71 to 1.41)1.01 (0.53 to 1.91)0.799
 Cases155985320
Prostate (C61)1.76 (1.37 to 2.25)1.0 (ref)0.61 (0.38 to 1.00)0.56 (0.33 to 0.93)0.92 (0.64 to 1.32)0.756
 Cases62221953
Kidney (C64)1.57 (1.19 to 2.09)1.0 (ref)0.70 (0.42 to 1.16)1.02 (0.64 to 1.64)0.92 (0.57 to 1.50)0.425
 Cases48222725
Bladder (C67)0.98 (0.61 to 1.57)1.0 (ref)0.71 (0.31 to 1.64)1.84 (0.96 to 3.54)1.15 (0.59 to 2.23)0.535
 Cases1781918
Brain and CNS (C70-72)1.45 (0.94 to 2.24)1.0 (ref)0.48 (0.19 to 1.20)1.07 (0.51 to 2.24)0.66 (0.26 to 1.63)0.860
 Cases206116
Thyroid (C73)1.26 (1.15 to 1.38)1.0 (ref)1.18 (1.01 to 1.37)1.29 (1.09 to 1.53)1.18 (0.93 to 1.50)0.990
 Cases46726018277
NHL (C82-C85, C96)0.79 (0.51 to 1.22)1.0 (ref)1.27 (0.66 to 2.46)1.14 (0.56 to 2.34)1.24 (0.61 to 2.48)0.953
 Cases20161213
Leukaemia (C91-C95)1.23 (0.83 to 1.80)1.0 (ref)1.00 (0.54 to 1.86)0.37 (0.14 to 0.97)0.90 (0.44 to 1.81)0.863
 Cases2616511
  • *SIR for the <1 mSv dose category.

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