Table 1.

Maternal characteristics.

Maternal characteristics	No/low (n=8)	Normal/hyperactive (n=11)	P-value
Maternal age (years)	28±2	29±2	0.29
Preterm labor	5 (63%)	7 (64%)	0.96
Premature rupture of membranes	0	3 (27%)	0.11
Chorioamnionitis	2 (25%)	1 (9%)	0.35
Pre-eclampsia	4 (50%)	2 (18%)	0.14
Magnesium sulfate	5 (63%)	3 (27%)	0.12