Table 2.

p of Pearson test correlation between maternal and neonatal caractéristics with BW in ART and natural conception.

	ART	Natural conception
	p-values	Impact (+) or no (−)
Maternal age	0.8714	+
Maternal body mass index	0.0516	+
Tobacco exposure	0.9222	+
Occurrence of gestationnel diabete	0.9067	+
gestational age	0.0046	+
Parity	0.8324	+
Sex	0.3018	+
Number of embryos transferred	0.5475
Stage of embryo transfer	0.5275
Slow freezing or vitrification	0.4404