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Table 4 Prevalence of vitamin D insufficiency by geographical region and gender

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

Regions Age, yrs (range) Serum 25(OH)D levels      
   < 75 nmol/L   < 50 nmol/L  
   Men Women Total Men Women Total
Bangkok 15 - 93 66.7% 75.5% 64.6% 10.8% 24.2% 14.3%
Central 15 - 91 36.2% 59.2% 43.1% 2.1% 11.4% 6.5%
North 15 - 98 27.9% 50.8% 39.1% 0.9% 6.5% 4.3%
Northeast 15 - 91 25.1% 51.0% 34.2% 0.1% 3.7% 2.8%
South 15 - 92 29.4% 65.8% 43.8% 1.5% 12.9% 6.3%
Total 15 - 98 32.6% 57.3% 45.2% 1.9% 9.3% 5.7%