Association between Brain-Derived Neurotrophic Factor (BDNF) Levels in 2^nd Trimester Amniotic Fluid and Fetal Development

Table 1

Comparative characteristics between groups SGA, LGA, and Control (mean values ± SD).

Variable	SGA group	LGA group	Control group	value
Maternal age	37 ± 3.4	33.5 ± 5	34.5 ± 3.4	0.01
Maternal weight	69.3 ± 14.7	59.9 ± 7.9	65.1 ± 11.1	0.15
Maternal height	166.8 ± 5	164.7 ± 7.1	167 ± 5.6	0.60
Maternal parity	0.9 ± 0.9	0.7 ± 0.7	0.7 ± 1	0.24
Fetal sex	Mostly XX	Mostly XY	Mostly XY	0.02
Birth week	35.5 ± 9.7	37.8 ± 1.1	38.5 ± 0.8	0.11
Birth weight (in grams)	2363.9 ± 746.3	3870.6 ± 335.2	3332.3 ± 285.1	0.01