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

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

	Correlation coefficient (r_s)	P-value
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

ISSN: 1471-2393