Table 4

Multiple linear regression analyses between white blood cells (WBCs), liver function (SGOT, SGPT, and RGT), and renal function tests (creatinine) among male workers

IndicatorsWhite blood cellsSGOTSGPTRGTCreatinine
*Values are parameter estimate (SEM) (p value).
Intercept4.38 (1.03)*3.9 (5.26)−34.5 (11.5)−15.8 (7.72)0.74 (0.12)
(0.0001)*(0.46)(0.0033)(0.043)(0.0001)
Smoking:
    1 (Smoker)0.44 (0.31)−0.75 (1.74)−0.62 (3.78)−1.63 (2.55)0.007 (0.038)
    0 (Non-smoker)(0.16)(0.67)(0.87)(0.52)(0.85)
HbsAg:
    1 (Positive)5.56 (1.89)8.44 (4.13)7.86 (2.78)
    0 (Negative)(0.0041)(0.043)(0.0056)
BMI (Each increment)0.118 (0.042)0.78 (0.22)2.43 (0.47)1.41 (0.32)0.012 (0.0047)
(0.006)(0.0005)(0.0001)(0.0001)(0.01)
Alcohol:
    1 (Drinker)−1.41 (2.37)−2.73 (5.16)3.42 (3.48)0.01 (0.052)
    0 (Non-drinker)(0.55)(0.60)(0.33)(0.85)
Age:
    1 (≥30)0.28 (0.27)1.04 (1.4)1.74 (3.06)1.33 (2.06)−0.028 (0.031)
    0 (<30)(0.31)(0.46)(0.57)(0.52)(0.37)
Job categories (office worker as reference group):
    Photolithography−1.41 (0.46)−2.57 (2.33)1.66 (5.07)−1.98 (3.41)0.058 (0.051)
(0.0026)(0.27)(0.74)(0.56)(0.26)
    Implantation−0.87 (0.47)−1.26 (2.37)−0.23 (5.17)−0.27 (3.48)0.01 (0.052)
(0.064)(0.6)(0.97)(0.94)(0.85)
    Etching and diffusion−0.70 (0.38)−0.55 (1.93)4.3 (4.2)−3.59 (2.83)0.013 (0.04)
(0.068)(0.78)(0.31)(0.21)(0.76)
    R20.190.170.250.230.094
(0.0009)(0.0085)(0.0001)(0.0005)(0.22)