. Author manuscript; available in PMC: 2014 May 1.

Published in final edited form as: Int Urogynecol J. 2012 Aug 17;24(5):735–740. doi: 10.1007/s00192-012-1913-x

Table 1.

Maternal characteristics of the 587 women with a history of reaching the second stage of labor by Beighton flexibility scores at enrollment (e.g., 5–10 years from first delivery)

Characteristic	Beighton score		P value
Characteristic	<4 N=541	≥4 N=46	P value
Age at enrollment, median (IQR), in years	40.0 (36.4, 43.2)	37.7 (35.3, 40.8)	0.047
Race
Caucasian	469 (87 %)	39 (85 %)	0.582
African American	53 (10 %)	4 (9 %)
Other	19 (4 %)	3 (7 %)
Maternal age >35 at 1st delivery	158 (29 %)	8 (17 %)	0.091
Multiparous (at enrollment)	402 (74 %)	33 (72 %)	0.727
Body mass index ≥30 kg/m² (at enrollment)	101 (19 %)	7 (15 %)	0.693

IQR Interquartile range