| variable | Frequency | Percent | |
| age group | 20 - 40 years young age | 187 | 77 |
| 41 - 60 years middle age | 56 | 23 | |
| Total | 243 | 100 | |
| sun exposure | <1 hr/day | 147 | 60.5 |
| 2 - 3 hr/day | 49 | 20.2 | |
| 3 - 4 hr/day | 26 | 10.7 | |
| 4 - 5 hrs/day | 11 | 4.5 | |
| >5 hrs/day | 10 | 4.1 | |
| Total | 243 | 100 | |
| address | Rural | 219 | 90.1 |
| Urban | 24 | 9.9 | |
| Total | 243 | 100 | |
| socioeconomic class | lower class | 221 | 90.9 |
| middle class | 15 | 6.2 | |
| upper class | 7 | 2.9 | |
| Total | 243 | 100 | |