Table 1 Demographic and clinical characteristics
Variables | Isopropanol (n = 248) | Lead (n = 182) | Noise (n = 157) | Control (n = 112) | P value |
|---|---|---|---|---|---|
Male, n (%) | 207(83.5) | 150(82.4) | 118(75.2) | 83(74.1) | 0.066 |
Age, years, mean±SD | 24.86±3.85 | 27.26±6.25 | 31.98±7.94 | 25.73±7.44 | <0.001 |
BMI, kg/m2, mean±SD | 21.25±2.93 | 21.17±3.09 | 22.33±2.98 | 20.50±2.87 | <0.001 |
Race Han, n (%) | 229(92.3) | 165(90.7) | 149(94.9) | 99(88.4) | 0.244 |
Education, n (%) | |||||
 Middle school or lower | 50(20.2) | 38(20.9) | 13(8.3) | 38(33.9) | <0.001 |
 High school | 130(52.4) | 66(36.3) | 129(82.2) | 65(58.0) |  |
 College or higher | 68(27.4) | 78(42.9) | 15(9.6) | 9(8.0) |  |
Current smoker, n (%) | 75(30.2) | 53(29.1) | 68(43.3) | 34(30.4) | 0.018 |
Current drinker, n (%) | 44(17.7) | 44(24.2) | 57(36.3) | 10(8.9) | <0.001 |
Job duration, years, M (P25, P75) | 3.0(2.0,4.59) | 2.8(1.7,4.0) | 3.0(1.7,5.0) | - | 0.391 |
Exposure duration, years, M (P25, P75) | 3.0(1.84,4.6) | 3.0(1.92,4.9) | 3.0(1.7,5.0) | - | 0.867 |
rTL, M (P25, P75) | 1.06(0.71,1.43) | 0.88(0.64,1.48) | 0.69(0.38,1.01) | 1.07(0.84,1.28) | <0.001 |