Table 1.
Demographic characteristics, biochemical data, and blood element concentration of all participants divided into quartiles according to serum Tumor necrosis factor-α (TNF-α) levels.
| Variable | Total | TNF-α (pg/mL) | |||
|---|---|---|---|---|---|
| n = 462 | <12.84 | 12.84 ≦ TNF-α <18.99 |
18.99 ≦ TNF-α <24.34 |
≧24.34 | |
| Gender | |||||
| Male | 368 (79.7) | 97 (83.6) | 86 (74.8) | 85 (73.3) | 100 (87.0) |
| Female | 94 (20.3) | 19 (16.4) | 29 (25.2) | 31 (26.7) | 15 (13.0) |
| Smoking | |||||
| Yes | 146 (31.6) | 40 (34.5) | 32 (27.8) | 33 (28.4) | 41 (35.7) |
| No | 316 (68.4) | 76 (65.5) | 83 (72.2) | 83 (71.6) | 74 (64.3) |
| Drinking alcohol | |||||
| Yes | 9 (1.9) | 1 (0.9) | 0 (0) | 3 (2.6) | 5 (4.3) |
| No | 453 (98.1) | 115 (99.1) | 115 (100) | 113 (97.4) | 110 (95.7) |
| Age (year) | 40.20 ± 8.62 | 37.96 ± 6.79 | 40.92 ± 10.28 | 40.70 ± 8.78 | 41.26 ± 7.94 |
| BMI (kg/m2) | 24.81 ± 3.41 | 25.67 ± 3.45 | 24.54 ± 3.56 | 24.29 ± 3.27 | 24.72 ± 3.23 |
| SBP (mmHg) | 124.31 ± 16.76 | 122.81 ± 14.53 | 122.48 ± 16.13 | 125.98 ± 16.38 | 125.97 ± 19.53 |
| DBP (mmHg) | 77.72 ± 12.49 | 77.10 ± 12.19 | 76.92 ± 11.49 | 78.06 ± 12.15 | 78.80 ± 14.06 |
| WBC (103/µL) | 6.83 ± 1.65 | 6.71 ± 1.59 | 6.66 ± 1.54 | 6.82 ± 1.61 | 7.12 ± 1.84 |
| RBC (106/µL) | 5.14 ± 0.54 | 5.16 ± 0.53 | 5.15 ± 0.55 | 5.08 ± 0.54 | 5.16 ± 0.53 |
| Hemoglobin (g/dL) | 14.95 ± 1.42 | 14.94 ± 1.34 | 14.92 ± 1.50 | 14.73 ± 1.46 | 15.21 ± 1.38 |
| Platelet (103/µL) | 255.89 ± 55.03 | 248.71 ± 54.03 | 252.18 ± 52.97 | 262.30 ± 51.60 | 260.39 ± 60.71 |
| AST (IU/L) | 24.33 ± 10.09 | 22.92 ± 6.52 | 23.22 ± 6.87 | 25.18 ± 12.06 | 26.01 ± 12.96 |
| ALT (IU/L) | 29.53±20.28 | 27.69 ± 15.03 | 26.57 ± 13.51 | 30.68 ± 24.99 | 33.19 ± 24.40 |
| TC (mg/dL) | 194.60 ± 33.94 | 191.71 ± 32.72 | 191.70 ± 34.09 | 198.32 ± 33.42 | 196.66 ± 35.42 |
| TG (mg/dL) | 128.29 ± 101.20 | 132.60 ± 104.03 | 115.94 ± 66.57 | 125.26 ± 89.74 | 139.36 ± 132.80 |
| Uric acid (mg/dL) | 6.35 ± 1.63 | 6.75 ± 1.68 | 6.07 ± 1.54 | 6.22 ± 1.70 | 6.36 ± 1.53 |
| Sugar (mg/dL) | 94.24 ± 24.24 | 92.18 ± 11.04 | 95.52 ± 30.90 | 98.48 ± 31.57 | 90.77 ± 16.02 |
| Creatinine (mg/dL) | 0.93 ± 0.23 | 0.84 ± 0.14 | 0.83 ± 0.20 | 0.96 ± 0.22 | 1.07 ± 0.26 |
| Pb (μg/L) | 67.88 ± 100.54 | 26.00 ± 15.34 | 28.17 ± 28.69 | 62.60 ± 73.03 | 155.15 ± 152.80 |
| Cd (μg/L) | 1.05 ± 0.67 | 0.98 ± 0.57 | 0.98 ± 0.60 | 1.05 ± 0.67 | 1.24 ± 0.82 |
| As (μg/L) | 6.39 ± 5.22 | 4.47 ± 3.15 | 6.05 ± 4.84 | 6.86 ± 6.36 | 8.60 ± 5.36 |
| Se (μg/L) | 255.4 ± 49.9 | 254.5 ± 42.9 | 262.7 ± 53.9 | 253.4 ± 51.2 | 250.3 ± 51.1 |
| Co (μg/L) | 0.45 ± 0.26 | 0.42 ± 0.17 | 0.43 ± 0.23 | 0.48 ± 0.29 | 0.50 ± 0.32 |
| Cu (μg/L) | 921.1 ± 170.9 | 916.0 ± 147.5 | 850.7 ± 126.4 | 964.0 ± 209.7 | 960.2 ± 167.3 |
| Zn (μg/L) | 7619.9 ± 1991.1 | 7194.3 ± 1383.4 | 6743.7 ± 1394.2 | 8271.3 ± 2473.8 | 8414.4 ± 2047.9 |
Data are presented as n(%) or mean ± standard deviation. BMI—body mass index; SBP—systolic blood pressure; DBP—diastolic blood pressure; WBC—white blood cell; RBC—red blood cell; AST—aspartate aminotransferase; ALT—alanine aminotransferase; TC—total cholesterol; TG—triglyceride.