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

Table 1

Analysis of factors affecting vitamin D supplementation.

	Supplement group (n = 228)	Non-supplement group (n = 140)	t/χ^2
Gender			0.561	0.454
Male	146	95
Female	82	45
Breast feeding			1.291	0.256
Yes	196	126
No	32	14
Embryonic days	38.68 ± 2.55	39.12 ± 2.95	1.513	0.131
Birth weight	3.58 ± 0.92	3.64 ± 1.12	0.558	0.577
Parents’ education level			9.436	0.002
Junior college or below	88	77
Bachelor degree or above	140	63
Residence			4.499	0.034
Rural	42	39
Cities and towns	186	101