Table 3.

Results of multiple regression analysis between birthweight and confounding factors among live born singletons

	β	t	p
Maternal age (per year)	−0.008	−0.45	0.65
Maternal weight (per kg)	0.211	11.77	<0.001
Frozen thawed embryo (versus fresh embryo)	0.079	4.25	<0.001
ICSI (versus IVF)	0.009	0.48	0.63
SAGE (versus Vitrolife)	−0.004	−0.24	0.81
Gestational age	0.490	27.38	<0.001
Gender (male versus female)	0.110	6.33	<0.001

β is the regression coefficient