Table 1. Summary statistics for characteristics of subjects.
| Variables | Mean ±S.D. or n (%) |
| Age (years) | 34.2±5.7 |
| Males | 83 (72.2%) |
| Working years | 4.4±4.3 |
| Weekly working hours | 42.5±14.2 |
| Education (years) | |
| ≤12 (High school) | 3 (2.6%) |
| 13–16 (College) | 66 (57.4%) |
| ≥17 (Master or higher) | 46 (40.0%) |
| Monthly income (NTD)* | |
| <20,000 | 2 (0.9%) |
| 20,000–40,000 | 36 (31.3%) |
| 40,000–60,000 | 28 (24.3%) |
| 60,000–80,000 | 29 (25.2%) |
| 80,000–100,000 | 8 (7.0%) |
| ≥100,000 | 12 (10.4%) |
| Marital status (n, %) | |
| Unmarried or single | 59 (51.3%) |
| Married or live together | 54 (47.0%) |
| Others | 2 (1.7%) |
| Smoking behavior (n, %) | |
| Non-smoker | 99 (86.1%) |
| Smoker | 16 (13.9%) |
| Exercise frequency (≥45 min per week. n, %)** | |
| Always | 5 (4.5%) |
| Usually | |
| Often | 16 (14.5%) |
| Sometime | 57 (51.4%) |
| Never | 11 (9.9%) |
S.D. Standard deviation NTD: New Taiwanese Dollars.
*Missing 1 samples **Missing 4 samples.