Skip to main content

Table 2 Duration of sunshine and mean serum vitamin D levels according to geographical region and gender

From: Regional variation and determinants of vitamin D status in sunshine-abundant Thailand

Regions Duration of sunshine (hours/day) 25(OH)D (nmol/L)  
   Men Women Total
Bangkok 4.7 - 9.1 69.0 ± 0.6 61.1 ± 1.3* 64.8 ± 0.7***
Central 4.1 -8.5 86.5 ± 1.7** 73.0 ± 1.1*, **, *** 79.5 ± 1.1**, ***
North 3.6 - 8.1 88.5 ± 1.7** 75.1 ± 1.8*, ** 81.7 ± 1.2**
Northeast 3.5 -8.0 87.8 ± 1.3** 76.7 ± 1.1*, ** 82.2 ± 0.8**
South 2.0 - 8.8 87.7 ± 2.9** 69.5 ± 0.8*, **, *** 78.3 ± 1.3**, ***
Total 2.0 - 9.1 85.9 ± 1.1 73.0 ± 0.8* 79.3 ± 0.8
  1. Values are range or mean ± SE
  2. *Significantly different from men (p < 0.001), ** significantly different from Bangkok (p < 0.001), *** significantly different from Northeast (p < 0.05)