Table 2. Relationship between placenta previa in the second trimester and time just before delivery and neonatal respiratory distress syndrome.

	RDS (n = 78)	Non-RDS (n = 1989)	P-value
Second trimester
No placenta previa, n (%)	64 (82.0)	1,917 (96.4)	0.004*
Placenta previa, n (%)	14 (18.0)	72 (3.6)
Time just before delivery
No placenta previa, n (%)	67 (85.7)	1,955 (98.3)	<0.001*
Placenta previa, n (%)	11 (14.3)	34 (1.7)

RDS, respiratory distress syndrome.

*Statistically significant.