Effect of Gestational Weight Gain on Perinatal Outcomes in Low Risk Pregnancies with Normal Prepregnancy Body Mass Index

Table 2

Comparison of perinatal outcomes among groups.

	Inadequate weight gain (n:62)	Normal weight gain (n:430)	Excessive weight gain (n:80)	p-value
Gestational age at delivery (week)	37,95±1,33	38,50±1,33	38,47±1,53	0.010
Fetal weight (g)	3063±279	3395±321	3652±324	<0.001
Low birth weight <2.5kgs (n%)	4 (6,4%)	22 (5,1%)	3 (3,7%)	0.765
Birth weight > 4.0kgs (n%)	2 (3,2%)	21 (4,8%)	5 (6,2%)	0.711
SGA (n%)	6 (9,6%)	30 (6,9%)	5 (6,2%)	0.702
LGA (n%)	2 (3,2%)	28 (6,5%)	7 (8,7%)	0.414
Male sex (n%)	34 (54,8%)	223(51,8%)	41(51,2%)	0.887
Induction of labor (n%)	13 (20,9%)	77 (19,0%)	19(23,7%)	0.571
Delivery<37 weeks (n%)	5 (8,0%)	35 (8,1%)	5 (6,2%)	0.868
Cesarean delivery for nonreassuring fetal heart rate testing (n%)	3 (4,8%)	17 (3,9%)	4 (5%)	0.881
Meconium-stained amniotic fluid (n%)	4 (6,4%)	25(5,8%)	7 (8,7%)	0.841
TTN (n%)	3 (4,8%)	20 (4,6%)	4 (5%)	0.988
RDS (n%)	1 (1,6%)	4 (0,9%)	1 (1,25%)	0.864
Hyperbilirubinemia(n%)	2 (3,2%)	7 (1,6%)	3 (3,6%)	0.386

SGA: small for gestational age, LGA: large for gestational age, TTN: transient tachypnea of the newborn, and RDS: respiratory distress syndrome.
Note. Different superscripts indicate statistically significant differences. Fetal weight was significantly lower in inadequate weight gain group compared to normal weight gain group (p<0.001). Fetal weight was significantly lower in normal weight gain group compared to excessive weight gain group (p<0.001).
The comparison of more than two groups was investigated using ANOVA followed by Tukey’s post hoc test with Minitab 16 (MinitabInc.; StateCollege, PA, USA). The difference between groups was considered statistically significant when p value was<0.05.