[Retracted] Growth and Development in Preterm Infants and Maternal Parenting Stress after WeChat-Based Extended Care

Table 2

Physical development of PIs between two groups after intervention.

Group	n	Body mass (kg)	Head circumference (mm)	Height (cm)
WeChat group	46	3.62 ± 0.36	34.68 ± 1.49	49.52 ± 1.73
Control group	39	3.17 ± 0.39	3.2.11 ± 1.39	46.88 ± 1.69
t		5.527	8.170	7.085
		<0.0001	<0.0001	<0.0001