Table 1 Demographic characteristics of participants stratified by regular and no regular exercise
From: PM2.5 exposure and DLEC1 promoter methylation in Taiwan Biobank participants
Variables | No regular exercise n = 285 | Regular exercise n = 211 | p value |
|---|---|---|---|
Mean DLEC1 promoter methylation (beta value) | 0.198 ± 0.001 | 0.193 ± 0.001 | < 0.001 |
PM2.5 (μg/m3) | 31.551 ± 0.455 | 32.756 ± 0.550 | 0.090 |
SO2 (ppb) | 4.137 ± 0.092 | 4.092 ± 0.099 | 0.741 |
CO (ppm) | 0.560 ± 0.013 | 0.546 ± 0.013 | 0.450 |
O3 (ppb) | 27.860 ± 0.192 | 27.989 ± 0.221 | 0.660 |
NOX (ppb) | 26.411 ± 0.746 | 25.581 ± 0.794 | 0.453 |
Sex | Â | Â | 0.075 |
 Women | 150 (52.63) | 94 (44.55) |  |
 Men | 135 (47.37) | 117 (55.45) |  |
Age (years) | 45.832 ± 0.635 | 55.185 ± 0.660 | < 0.001 |
Cigarette smoking | Â | Â | 0.011 |
 Never | 222 (77.89) | 152 (72.04) |  |
 Former | 27 (9.47) | 39 (18.48) |  |
 Current | 36 (12.63) | 20 (9.48) |  |
Alcohol drinking | Â | Â | 0.633 |
 Never | 261 (91.58) | 188 (89.10) |  |
 Former | 8 (2.81) | 7 (3.32) |  |
 Current | 16 (5.61) | 16 (6.50) |  |
Betel nut chewing | Â | Â | 0.516 |
 No | 266 (93.33) | 202 (95.73) |  |
 Former | 11 (3.86) | 5 (2.37) |  |
 Current | 8 (2.81) | 4 (1.90) |  |
BMI (kg/m2) | Â | Â | 0.040 |
 Normal (< 18.5) | 130 (45.61) | 94 (44.55) |  |
 Underweight (18.5 ≤ BMI < 24) | 17 (5.96) | 3 (1.42) |  |
 Overweight (24 ≤ BMI < 27) | 76 (26.67) | 71 (33.65) |  |
 Obesity (BMI ≥ 27) | 62 (21.75) | 43 (20.38) |  |
Secondhand smoke exposure | Â | Â | 0.009 |
 No | 247 (86.67) | 198 (93.84) |  |
 Yes | 38 (13.33) | 13 (6.16) |  |