Table S3.

Comparison of pelvic shape of parous and nonparous women

Age range, y	df	SS	MS	Rsq	F	P
28–41	1	0.00578	0.00578	0.07291	1.88757	0.10330
Residuals	24	0.07344	0.00306
Total	25	0.07922

Sample structure: nonparous: n = 13, mean age = 34.1 y; parous: n = 12 (9 multiparae), mean age = 34.4 y. Df, degrees of freedom; F, F-value; MS, mean square; P = P value; Rsq, R²; SS, sum of squares.