| Variables | Cases No. (%) | Controls No. (%) | Total N = 100 (%) | P-value | |
| Age (years) | 68.28 ± 8.01 | 57.82 ± 9.61 | 63.05 ± 10.25 | 0.000* | |
| Sex | Male | 27 (54.0%) | 19 (38.0%) | 46 (46.0%) | 0.079 |
| Female | 23 (46.0%) | 31 (62.0%) | 54 (54.0%) | ||
| Living in sunny house | |||||
| Yes | 26 (52.0%( | 41 (82.0%( | 67 (67.0%( | 0.001* | |
| No | 24 (48.0%( | 9 (18.0%( | 33 (33.0%( | ||
| Sun exposure and mean duration of daily exposure | |||||
| Yes | 30 (60.0%) | 40 (80.0%) | 70 (70.0%) | 0.024* | |
| No | 20 (40.0%) | 10 (20.0%) | 30 (30.0%) | ||
| Daily duration | 24.2 ± 28.50 | 40.5 ± 26.05 | 32.3 ± 28.37 | 0.004* | |