Table 2.
Baseline distribution of UVB of depression and comparison.
| Comparison | Depression |
Two-Tailed Test p-Value |
Chi-Square p-Value |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N (%) | Average Monthly UVB Exposure (UVI) | N (%) | Average Monthly UVB Exposure (UVI) | |||||||||||
| Mean (SD) | Q1 | Median | Q3 | Mean (SD) | Q1 | Median | Q3 | |||||||
| Total participants Ultra–violet Index WHO standard level | ||||||||||||||
| Low level | 87,700 | (92.99%) | 1.37 (0.26) | 1.21 | 1.29 | 1.53 | 21,486 | (32.65%) | 1.43 (0.28) | 1.22 | 1.38 | 1.56 | <0.0001 | <0.0001 |
| Moderate level | 3937 | (4.17%) | 4.60 (0.73) | 3.99 | 4.67 | 5.16 | 1236 | (5.91%) | 4.51 (0.80) | 3.88 | 4.60 | 5.11 | ||
| High level | 1223 | (1.3%) | 6.86 (0.55) | 6.45 | 6.82 | 7.23 | 381 | (2.78%) | 6.88 (0.57) | 6.45 | 6.87 | 7.31 | ||
| Very high level | 763 | (0.81%) | 9.20 (0.81) | 8.51 | 9.16 | 9.69 | 246 | (2.43%) | 9.32 (0.84) | 8.54 | 9.40 | 10.00 | ||
| Extreme level | 693 | (0.73%) | 13.87 (2.14) | 12.02 | 13.63 | 15.15 | 230 | (3.39%) | 13.91 (2.31) | 12.09 | 13.40 | 15.15 | ||
UVB, ultraviolet radiation b; UVI, ultra–violet index; SD, Standard Deviation; WHO, world health organization, Q1, first quartile; Q3, third quartile.