Table 2.
Time-dependent Cox regression analysis of metabolic syndrome according to occupational exposure
| Category | Risk factor | N (%) | UnAdjusted |
Adjusted∗ |
|---|---|---|---|---|
| HRS (95% CI) | HRS (95% CI) | |||
| Physical | Night shift work | 18,763 (20.18) | 1.30 (1.22-1.38) | 1.45 (1.36-1.54) |
| Noise | 9022 (9.70) | 1.61 (1.50-1.73) | 1.15 (1.07-1.24) | |
| Radiation | 639 (0.69) | 0.55 (0.34-0.90) | 0.94 (0.58-1.51) | |
| Toluene | 1182 (1.27) | 1.80 (1.50-2.16) | 1.42 (1.18-1.71) | |
| Organic solvents, Aerosols | Xylene | 492 (0.53) | 2.38 (1.85-3.06) | 1.67 (1.29-2.15) |
| Styrene | 184 (0.20) | 2.32 (1.58-3.41) | 1.52 (1.03-2.24) | |
| Phenol | 296 (0.32) | 1.30 (0.81-2.09) | 1.23 (0.77-1.98) | |
| Dichloromethane | 643 (0.69) | 1.96 (1.55-2.47) | 1.41 (1.11-1.78) | |
| TCM(Chloroform) | 158 (0.17) | 0.31 (0.08-1.22) | 0.51 (0.13-2.05) | |
| Trichloroethylene | 316 (0.34) | 2.55 (1.90-3.41) | 1.86 (1.38-2.51) | |
| 2-Butoxyethanol | 604 (0.65) | 1.39 (1.04-1.87) | 1.23 (0.92-1.66) | |
| Formaldehyde | 128 (0.14) | 1.39 (0.70-2.75) | 1.16 (0.59-2.28) | |
| Acetone | 353 (0.38) | 1.32 (0.89-1.96) | 1.03 (0.69-1.53) | |
| Methyl ethyl ketone | 369 (0.40) | 1.20 (0.80-1.80) | 0.88 (0.59-1.32) | |
| Methyl isobutyl ketone | 489 (0.53) | 1.73 (1.31-2.30) | 1.20 (0.90-1.60) | |
| Dimethylformamide | 217 (0.23) | 3.03 (1.84-4.97) | 2.10 (1.26-3.49) | |
| Methylene Bisphenyl Diisocyanate | 170 (0.18) | 0.91 (0.47-1.76) | 0.70 (0.36-1.35) | |
| Acetonitrile | 159 (0.17) | 1.72 (0.99-2.99) | 2.00 (1.14-3.50) | |
| Oil mist | 494 (0.53) | 1.71 (1.30-2.25) | 1.30 (0.98-1.72) | |
| HCl | 130 (0.14) | 0.58 (0.21-1.57) | 0.50 (0.18-1.36) | |
| Sulfuric acid | 122 (0.13) | 0.84 (0.37-1.91) | 0.70 (0.31-1.58) | |
| Nitrogen dioxide | 118 (0.13) | 1.65 (0.87-3.13) | 1.62 (0.82-3.21) | |
| Fe | 1365 (1.47) | 1.90 (1.61-2.23) | 1.28 (1.08-1.50) | |
| Metals, Dust | Mn | 839 (0.90) | 1.85 (1.50-2.29) | 1.24 (1.01-1.53) |
| Al | 789 (0.85) | 1.57 (1.24-1.99) | 1.12 (0.88-1.42) | |
| Cr | 573 (0.62) | 1.45 (1.08-1.94) | 1.03 (0.76-1.38) | |
| Ni | 457 (0.49) | 1.60 (1.17-2.18) | 1.14 (0.83-1.56) | |
| Pb | 445 (0.48) | 1.76 (1.30-2.38) | 1.38 (1.02-1.86) | |
| Cu | 439 (0.47) | 2.81 (2.21-3.56) | 1.87 (1.47-2.37) | |
| Zn | 343 (0.37) | 0.84 (0.52-1.34) | 0.60 (0.37-0.96) | |
| Sn | 165 (0.18) | 1.45 (0.86-2.43) | 1.46 (0.88-2.41) | |
| Sb | 140 (0.15) | 2.58 (1.61-4.14) | 1.83 (1.08-3.10) | |
| Welding fume | 607 (0.65) | 1.91 (1.50-2.43) | 1.27 (1.00-1.62) | |
| Mineral dust | 684 (0.74) | 1.63 (1.27-2.10) | 1.14 (0.89-1.47) | |
| Fibrous glass dust | 141 (0.15) | 1.89 (1.08-3.31) | 1.58 (0.91-2.76) |
∗
adjustment with all variables in Table 1 (sex, age, smoking, alcohol intake, exercise frequency, and family history).