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Table 3 Distribution of blood lead level (μg/dL) measurements by each exposure category and year

From: Blood lead levels of Korean lead workers in 2003–2011

Year PbB <3 μg/dL 3≤ PbB <5 5≤ PbB <10 10≤ PbB <30 30≤ PbB <40 40≤ PbB <60 PbB ≥60 Total
2003 6269 (20.13) 7849 (25.21) 8223 (26.41) 7467 (23.98) 918 (2.95) 368 (1.18) 43 (0.14) 31137
2004 7471 (21.53) 10440 (30.09) 9971 (28.73) 5618 (16.19) 749 (2.16) 410 (1.18) 42 (0.12) 34701
2005 8826 (26.49) 10319 (30.98) 8757 (26.29) 4672 (14.02) 446 (1.34) 245 (0.74) 47 (0.14) 33312
2006 10666 (24.30) 14696 (33.48) 10266 (23.39) 6924 (15.77) 877 (2.00) 426 (0.97) 44 (0.10) 43899
2007 11897 (27.34) 15819 (36.35) 9519 (21.87) 5374 (12.35) 632 (1.45) 259 (0.60) 17 (0.04) 43517
2008 11448 (26.71) 14931 (34.83) 10348 (24.14) 5352 (12.49) 537 (1.25) 224 (0.52) 26 (0.06) 42866
2009 15070 (36.10) 14815 (35.49) 8015 (19.20) 3513 (8.42) 234 (0.56) 82 (0.20) 16 (0.04) 41745
2010 17699 (39.88) 14502 (32.68) 7959 (17.93) 3820 (8.61) 252 (0.57) 130 (0.29) 20 (0.05) 44382
2011 20807 (41.80) 15498 (31.14) 8953 (17.99) 4095 (8.23) 340 (0.68) 76 (0.15) 3 (0.01) 49772
Total 110153 (30.15) 118869 (32.54) 82011 (22.45) 46835 (12.82) 4985 (1.36) 2220 (0.61) 258 (0.07) 365331
  1. Values reported as n (%). PbB, blood lead concentration (μg/dL).