Table 5.
Correlations between Questionnaires and Dosimeter Readings, and Serum Vitamin D Levels
| Spearman’s Rank Correlation | P -value | ||
|---|---|---|---|
| ST SEM-Q | |||
| Average time (minutes) spent in sun |
UV Dosimeter readings (MED) |
0.601 |
< 0.001 |
| Adjusted-average time (minutes)* |
UV Dosimeter readings (MED) |
0.534 |
<0.001 |
| ST SEM-Q as a score |
Serum vitamin D levels |
0.363 |
0.01 |
| LT SEM-Q | |||
| Time (minutes) spent in sun in summers |
UV Dosimeter readings (MED) |
0.582 |
0.01 |
| Time (minutes) spent in sun in winters |
UV Dosimeter readings (MED) |
0.613 |
0.01 |
| Score of sun exposure in summers (per day) |
Serum vitamin D levels |
0.429** |
0.01 |
| Score of sun exposure in Winters (per day) | Serum vitamin D levels | 0.483** | 0.01 |
ST SEM-Q=Short term sunlight exposure measurement questionnaire; MED=minimual erythemal dose, LT SEM-Q= Long term sunlight exposure measurement questionnaire.
* adjusted for sun protection practices, weather and travelling in vehicle; ** Pearson’s Correlation reported.