Table 1.

Maternal characteristics and pregnancy outcome in relation to maternal obesity class. Continuous variables Mean (Std)

	Obesity class I	Obesity class II	Obesity class III	P-value
	N = 223	N = 77	N = 43
Maternal age (years)	30.0 (4.7)	30.4 (4.4)	29.0 (5.3)	0.322
Gestational length (full weeks)	39.2 (2.0)	39.8 (1.4)	39.0 (2.6)	0.076
Birth-weight (gram)	3708 (594)	3713 (448)	3670 (811)	0.920
Weight gain during pregnancy (kg)	10.6 (5.6)	9.6 (6.0)	7.7 (6.1)	0.015
	N = 203	N = 66	N = 35

P < 0.05 statistical significance in difference between obesity class I-III groups