Table 1.
General characteristics of study participants
| Characteristics | Number (n = 391) | Percentage |
|---|---|---|
| Gender | ||
| Male | 296 | 75.7 |
| Female | 95 | 24.3 |
| Age (years) | ||
| Median (interquartile range) | 31 (25 to 41) | |
| Nationality | ||
| Vietnamese | 362 | 92.6 |
| Chinese | 23 | 5.9 |
| Thai | 6 | 1.5 |
| Occupation | ||
| Sawmill factory worker | 96 | 24.6 |
| Trader/shopkeeper | 84 | 21.5 |
| Industrial factory worker | 72 | 18.4 |
| Plantation worker/farmer | 64 | 16.4 |
| Repairer | 20 | 5.1 |
| Furniture factory worker | 18 | 4.6 |
| Construction worker | 11 | 2.8 |
| Wood cutter | 8 | 2.0 |
| Other | 18 | 4.6 |
| Study site | ||
| Thapangthong district | 77 | 19.7 |
| Xepon district | 104 | 26.6 |
| Nong district | 108 | 27.6 |
| Phin district | 102 | 26.1 |