Table 1.

Comparison of Long Term (LT) and Short Term (ST) Sunlight Exposure Measurement Questionnaires (SEM-Q)

	LT SEM-Q*	ST SEM-Q**
Reference period	1 year: Previous year summer and winter seasons	1 day: Hourly routine sun exposure recorded for 1 day
Type of questionnaire	Interviewer administered	Self administered (verified)
Domains: Time (minutes) spent outdoors, weather, clothing, use of sunscreen, sun protection practices, use of multivitamin and skin tone.	Typical week or day in previous summers and winters.	Additional domain: Travel in car/bus with windows up. In the form of a grid with time in one hour interval from sunrise to sunset

^* Long term sunlight exposure measurement questionnaire;

^** Short term sunlight exposure measurement questionnaire; 4 questionnaires were filled out on the four days that dosimeters were worn.