Age, years, mean (range) | 28 (19–48) |
Gender, n (%) women | 35 (63.6) |
Body mass index, kg/m2, mean (SD) | 23.7 (3.8) |
Daily use of vitamin D-containing butter or margarine on bread or in cooking, n (%) | 25 (45.5) |
Regular consumption of vitamin D enriched milk, n (%) | 14 (25.5) |
Intake of fatty fish at least twice a week, n (%) | 32 (58.2) |
Habitual use of dietary supplements other than vitamin D, n (%) | 7 (12.7) |
Common use of sunscreen on sunny days, n (%) | 18 (32.7) |
Exposes skin to direct sunlight > 10 minutes on sunny days, n (%) | 49 (89.1) |
Spends on average more than 2 hours outdoors during a sunny week, n (%) | 36 (65.5) |