Table 4.
Description of Main Variables of Interest
| Variables |
Sunlight exposure groups |
Total (n = 54) | ||
|---|---|---|---|---|
| Low (n = 19) | Moderate (n = 18) | High (n = 17) | ||
| Serum vitamin D (ng/ml) [Mean(SD)] |
9.8 (4.7) |
11.1 (4.6) |
17.0 (6.5) |
12.3 (5.9) |
| PS UV dosimeter (MED) [Median(IQR)] |
0.5 (0.1–10.2) |
0.8 (0.2–8.2) |
3.6 (2.1–11.9) |
1.2 (0.1–11.9) |
| ST SEM-Q* | ||||
| Time (minutes) spent outdoors |
69.5 (32.0) |
83.5 (29.7) |
329 (115.7) |
95.6 (18.7–487.5)** |
| Adjusted time (minutes) *** |
43.0 (22.5) |
64.9 (21.8) |
258 (114.7) |
76.3 (12.0–463.8)** |
| LT SEM-Q | ||||
| Time (minutes) outdoors in summer [Mean(SD)] |
54.5 (30.0) |
81(62.7) |
331.2 (63.8) |
150 (134.9) |
| Mean (SD) time outdoors in winters | 59.7 (32.5) | 89.4 (65.0) | 310 (85.0) | 148 (127.6) |
SD=Standard deviation; MED=Minimal erythemal dose; IQR=Inter quartile range;
* Significantly different on Kruskal Wallis test (P <0.001); ** Medians (IQR) reported; *** adjusted for weather outdoors, seeking shade & travel in vehicle.