Table 4 Geometric means of blood lead levels by Korean industry division (Manufacturing; 2003–2011)
KSIC-9 code | Industry division | n | GM (μg/dL; 95% CI) |
|---|---|---|---|
28 | Manufacture of Electrical Equipment | 35389 | 7.80 (7.71-7.89) |
22 | Manufacture of Rubber and Plastic Products | 7149 | 7.35 (7.18-7.52) |
24 | Manufacture of Basic Metal Products | 32279 | 6.77 (6.70-6.84) |
23 | Manufacture of Other Non-metallic Mineral Products | 5639 | 6.27 (6.14-6.40) |
20 | Manufacture of Chemicals and Chemical Products, Except Pharmaceuticals and Medicinal Chemicals | 16712 | 5.93 (5.84-6.02) |
25 | Manufacture of Fabricated Metal Products, Except Machinery and Furniture | 9904 | 5.03 (4.95-5.11) |
29 | Manufacture of Other Machinery and Equipment | 16217 | 3.79 (3.75-3.83) |
27 | Manufacture of Medical, Precision and Optical Instruments, Watches and Clocks | 9346 | 3.63 (3.58-3.69) |
30 | Manufacture of Motor Vehicles, Trailers, and Semitrailers | 17334 | 3.58 (3.53-3.62) |
31 | Manufacture of Other Transport Equipment | 53463 | 3.57 (3.55-3.58) |
26 | Manufacture of Electronic Components, Computer, Radio, Television and Communication Equipment and Apparatuses | 69587 | 3.24 (3.22-3.26) |
Total | 273019 | 4.50 (4.48-4.51) |