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Occup Environ Med 59:44-48 doi:10.1136/oem.59.1.44
  • Original article

Decreased white blood cell counts in semiconductor manufacturing workers in Taiwan

Table 5

Prevalence of decreased white blood cells (WBCs), and abnormal liver function (SGOT, SGPT, and RGT) by sex

Sex/department White blood cells SGOT SGPT RGT
*p<0.05; **p<0.1; †OR=crude odds ratio; AOR=odds ratio adjusted by age, cigarette smoking, alcohol drinking, hepatitis B surface antigen, and body mass index.
Men:
    Photolithography (n=20) (n (%)) 6 (30) 1 (5) 3 (15) 2 (10)
    OR (95% CI)† 7.3** (0.96 to 55.6) 0.4 (0.01 to 6.9) 0.9 (0.12 to 6.7) 0.4 (0.04 to 3.1)
    AOR (95% CI)‡ 8.1** (0.83 to 78.3) 0.4 (0.02 to 5.8) 0.8 (0.11 to 5.1) 0.4 (0.05 to 3.74)
Implantation (n=19) (n (%)) 4 (21.1) 0 (0) 2 (10.5) 1 (5.3)
    OR (95% CI) 4.5 (0.5 to 45.2) 0.6 (0.06 to 5.3) 0.2 (0.01 to 2.3)
    AOR (95% CI) 3.7 (0.36 to 39.3) 0.9 (0.11 to 7.1) 0.4 (0.03 to 5.7)
Etching and diffusion (n=57) (n (%)) 8 (14) 4 (7.0) 12 (21.1) 5 (8.8)
    OR (95% CI) 2.8 (0.32 to 23.9) 0.6 (0.08 to 5.3) 1.3 (0.3 to 6.9) 0.3 (0.07 to 1.8)
    AOR (95% CI) 3.3 (0.37 to 28.8) 0.6 (0.08 to 13.1) 1.2 (0.3 to 5.3) 0.3 (0.05 to 1.65)
Office (n=18) (n (%)) 1 (5.6) 2 (11.1) 3 (16.7) 4 (22.2)
    OR (95% CI) 1.0 1.0 1.0 1.0
    AOR (95% CI) 1.0 1.0 1.0 1.0
Women:
    Photolithography (n=34) (n (%)) 4 (11.8) 2 (5.9) 6 (17.7) 2 (5.9)
    OR (95% CI) 0.8 (0.2 to 3.7) 1.8 (0.1 to 51.7) 6.0** (0.63 to 141) 4.5 (0.21 to 98.5)
    AOR (95% CI) 0.5 (0.1 to 2.44) 2.4 (0.16 to 34) 9.6** (0.86 to 107) 6.4** (0.53 to 75.8)
Etching and diffusion (n=50) (n (%)) 6 (12) 4 (8) 4 (8) 2 (4)
    OR (95% CI) 0.9 (0.22 to 3.3) 2.4 (0.23 to 60.2) 2.4 (0.23 to 60.2) 3.0 (0.14 to 65.6)
    AOR (95% CI) 0.6 (0.15 to 2.5) 4.2 (0.36 to 48.4) 4.6 (0.4 to 51.9) 3.3 (0.26 to 43.1)
Office (n=29) (n (%)) 4 (13.8) 1 (3.5) 1 (3.5) 0 (0)
    OR (95% CI) 1.0 1.0 1.0 1.0
    AOR (95% CI) 1.0 1.0 1.0 1.0

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