Table 2 Characteristics of non-smoking study population (n = 57)
Variables | Study subjects | |
|---|---|---|
| Â | Mean | SD |
Age (year) | 34.4 | 3.2 |
BMI (Kg/m2) | 23.0 | 3.6 |
Waist circumstances (cm) | 78.4 | 9.9 |
Time spent indoors (hours) | 19.5 | 3.6 |
Time spent outdoors (hours) | 3.82 | 2.65 |
Transit time (hours) | 0.70 | 0.66 |
| Â | N | % |
|---|---|---|
Gender | Â | Â |
 Female | 32 | 56.1 |
 Male | 25 | 43.9 |
Alcohol drinking | Â | Â |
 No | 50 | 87.7 |
 Yes | 7 | 12.3 |
Vitamin supplement | Â | Â |
 No | 44 | 77.2 |
 Yes | 13 | 22.8 |
Medicine taken | Â | Â |
 No | 54 | 94.7 |
 Yes | 3 | 5.3 |
Regular exercise | Â | Â |
 No | 2 | 3.5 |
 Yes | 55 | 96.5 |