Table 4.

Potential variables associated with postnatal growth velocities by bivariate linear regression analysis^a

	ΔLengthZ			ΔWeightZ
Variables	B	Std.Er	P-value	B	Std.Er	P-value
Sex(female 0, male 1)	0.177	0.067	0.009	0.218	0.059	0.000
PMA at birth(week)	0.188	0.044	0.000	0.160	0.039	0.000
Number of fetus(singleton 0, twin 1)	0.065	0.077	0.403	0.136	0.068	0.045
Parity (non-primiparity 0, primiparity 1)	0.046	0.071	0.520	−0.028	0.063	0.656
Delivery mode (spontaneous dilivery 0, caesarean section 1)	0.003	0.070	0.970	0.055	0.062	0.375
PMA at visit(week)	0.138	0.035	0.000	0.176	0.031	0.000
Feeding mode(EBF 0, PBF 1, EFF 2)	0.069	0.049	0.165	0.002	0.044	0.961
Intrauterine growth status(SGA 0, AGA 1, LGA 2)	0.040	0.113	0.720	−0.274	0.099	0.006
Nutrition risk(LNR 0, MNR 1)	−0.176	0.151	0.244	0.055	0.133	0.680
Maternal age(year)	−0.016	0.008	0.053	−0.013	0.007	0.071
Paternal age(year)	−0.003	0.007	0.643	−0.002	0.006	0.782
≥ College (mother), N(%)	0.010	0.087	0.912	0.040	0.077	0.602
≥ College (father), N(%)	0.061	0.094	0.515	0.035	0.083	0.669

^aAbbreviations: PMA Postmenstrual age, SGA Small-for-gestational-age, AGA Appropriate-for-gestational-age, LGA Large-for-gestational-age, EBF Exclusive breast feeding, PBF Partial breast feeding, EFF Exclusive formula feeding, LNR Low nutrition risk, MNR Medium nutrition risk, ΔLengthZ Z-score change of Length, ΔWeightZ Z-score change of Weight