Table 5.

Variables associated with postnatal growth velocities by stepwise multivariate linear regression analysis^a

	Variable	B	Std. Err	P-value	95.0% Confidence Interval
					Lower Limit	Upper Limit
ΔLengthZ	Sex	0.152	0.066	0.022	0.022	0.282
	PMA at birth	0.144	0.049	0.004	0.047	0.240
	Maternal age	−0.017	0.008	0.037	−0.034	− 0.001
	PMA at visit	0.078	0.039	0.048	0.001	0.156
ΔWeightZ	Sex	0.205	0.057	0.000	0.092	0.318
	Intrauterine growth status	−0.225	0.096	0.019	−0.413	− 0.037
	Number of fetus	0.154	0.066	0.020	0.025	0.284
	PMA at visit	0.171	0.030	0.000	0.112	0.230

^aAbbreviations: ΔLengthZ Z-score change of Length, ΔWeightZ Z-score change of Weight, PMA Postmenstrual age