Development and validation of sunlight exposure measurement questionnaire (SEM-Q) for use in adult population residing in Pakistan

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.

ISSN: 1471-2458