Table 1.

Patient demographics—natural conception vs IVF

	Natural conception (n = 712)	IVF (n = 712)	p value
Age	35.0 ± 5.4	35.0 ± 5.4	1a
Parity	0.9 ± 1.1	0.6 ± 0.9	< 0.001a
BMI	24.1 ± 4.4	24.3 ± 3.9	0.515a
Comorbiditiesc	83 (11.7%)	123 (17.3%)	0.002b

Data presented as mean ± standard deviation for parametric continuous variables and n (%) for categorical variables

^at test

^bChi-square test

^cCharacterization of comorbidities is detailed in Supplemental Table 1