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Table 4 Correlation of total body surface area, percentage of body area exposed, and ultra violet B intensity, with maternal serum vitamin D level

From: Optimizing ultraviolet B radiation exposure to prevent vitamin D deficiency among pregnant women in the tropical zone: report from cohort study on vitamin D status and its impact during pregnancy in Indonesia

  Correlation coefficient
TBSA (m2) exposed to sun with maternal vitamin D 0.360 < 0.001
Percentage of body area exposed to sun with maternal vitamin D 0.390 <  0.001
UVB intensity (MED/hour) with maternal vitamin D 0.153 0.029