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Table 11 Exposure characteristics of the study subjects

From: Review of carcinogenicity of asbestos and proposal of approval standards of an occupational cancer caused by asbestos in Korea

Variables   No Percent
Major carcinogen caused lung cancer Asbestos 105 50
Crystaline silica 42 20
Cr6+ 26 12.4
Welding fume including Cr6+,nickel 18 8.6
DEEa 5 2.4
Rubber dust 2 1.0
CTPVb & PAHc 3 1.4
Coke oven emission (COE) 1 0.5
Year at first exposure -1969 12 5.7
1970-1979 73 34.8
1980-1989 91 43.3
1990-1999 33 15.7
2000- 1 0.5
Exposure duration(years) <10 12 5.7
≥10 and < 20 84 40
≥20 and < 30 92 43.8
≥30 22 10.5
Mean ± S.D.d 19.8 ± 9.9
Mean ± S.D.e 22.5 ± 8.4
Latent duration(years) <10 5 2.4
≥10 and < 20 62 29.5
≥20 and < 30 95 45.2
≥30 48 22.9
Mean ± S.D.d 23.0 ± 9.9
Mean ± S.D.e 26.6 ± 7.5
  1. aDEE is the abbreviation of diesel engine exhaust; bCTPV is coal tar pitch volatile; cPAH is polyaromatic hydrocarbons
  2. dValues are given as mean ± S.D. of lung cancer-asbestos exposure case report data in KOSHA; S.D. is the abbreviation of standard deviation
  3. eValues are given as mean ± S.D. of lung cancer-asbestos exposure case report data in occupational lung diseases institute (2004-2011)