Table 3.

25OHD according to sunbathing habits (mean ± SD)

All yearStratification according to time of year of blood collection
Summertime*Wintertime
N25OHD (nmol/L)N25OHD (nmol/L)N25OHD (nmol/L)
Rarely32260 ± 2815768 ± 2716554 ± 27
Sometimes1,51174 ± 2865683 ± 2685566 ± 28
Often59780 ± 3127392 ± 3332470 ± 27
P-trend<0.01<0.01<0.01
  • *Summertime was defined as samples collected from May to October.

  • Wintertime was defined as samples collected from November to April.