Table 1.

Comparisons of general information between the control and observation groups

General information	Control group (n = 100)	Observation group (n = 100)	P
Age (year)	30.2 ± 4.8	30.1 ± 5.2	0.876
BMI (kg/m2)	20.7 ± 2.1	20.7 ± 2.3	0.929
Number of gravidities	2.0 (1.0, 3.0)	2.0 (1.5, 3.0)	0.595
Number of parities	2.0 (1.0, 2.0)	2.0 (1.0, 2.0)	0.292
Gestational age at delivery (weeks)	39.3 (38.7, 40.0)	39.4 (38.5, 40.3)	0.445

Age and BMI were compared using independent samples t-tests, while the other variables were analyzed using the Mann–Whitney U test