[Retracted] Effects of Routine Health Care Combined with Oral Vitamin D on Linear Growth in 5-Year-Old Children

Table 3

Comparison of serum 25-hydroxyvitamin D levels between the two groups of children.

	Lack of vitamin D	Vitamin D deficiency	Normal vitamin D
Supplement group (n = 228)	1	22	205 (89.91)
Non-supplement group (n = 140)	13	43	84 (60.00)
t/χ^2			46.03
			<0.001