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. 2010 Dec 23;10:782. doi: 10.1186/1471-2458-10-782

Table 3.

Vitamin D status and clothing, sunlight exposure and calcium levels

25(OH)D status

Deficient
(<20 ng/mL)
Insufficient
(20-29.99 ng/mL)
Sufficient
(≥30 ng/mL)
P*
Wearing clothes which restrict exposure to sunlight p = 0.032
Yes 77.2% 14.6% 8.3%
No 71.3% 11.5% 17.2%

Sunlight exposure p = 0.570
<8 points 82.4% 11.8% 5.9%
8-11 points 78.2% 10.9% 10.9%
≥12 points 71.8% 15.9% 12.3%

Daily calcium intake p = 0.880
500 mg/day 76.0% 14.7% 9.3%
<500 mg/day 74.8% 13.9% 11.3%

*Chi-square test