Table I.

Demographic and clinical characteristics

Characteristics	Mid-trimester (n=29)	p*	Term no labor (n=28)	p**	Term in labor (n=26)
Maternal age, years	36 (26–40)	<0.001*	24 (14–42)	0.2	22 (15–36)
Gestational age at amniocentesis, weeks	16 (15–18)	<0.001*	39.3 (38–42)	0.3	40 (38–42)
Gestational age at delivery, weeks	39 (37–42)	0.6	39.3 (38–42)	0.3	40 (38–42)
Birthweight, grams	3460 (2866–4043)	0.3	3330 (2810–4470)	0.2	3325 (2540–3760)
Male gender, n (%)	17 (58.6%)	0.1	11 (39.3%)	0.03*	18 (69.2%)

Values are presented as median (range) or numbers (percent); *p<0.05

^*Comparison between mid-trimester and Term no labor.

^**Comparison between Term no labor and Term in labor