Table 4.

Correlation Coefficients for Principal Component (PC) Scores Versus Anorectal Variables From Controls Versus Prolapsed Patients and for Prolapsed Patients Alone. ^a

Variable	Controls b and Prolapse (N=67)			Prolapse alone (N=39)
	PC1 (53%)	PC2 (31%)	PC3 (12%)	PC1 (48%)	PC2 (31%)	PC3 (13%)	PC4 (7%)
Anal resting pressure	0.91c	−0.21	0.18	0.67c	−0.68c	−0.02	0.46d
Anal squeeze pressure	0.85c	−0.10	0.47c	0.75c	−0.61c	0.37e	−0.29
Rectal pressure during bear down	0.12	0.94c	0.25e	0.75c	0.25	0.18	−0.17
Rectoanal gradient	−0.72c	0.56c	0.36e	0.02	0.71c	0.57c	0.04
Anal pressure during bear down	0.83c	0.17	−0.26e	0.85c	−0.16	−0.13	−0.17
R2	53%	31%	12%	48%	31%	13%	7%

^aAll values except for the last row are Spearman correlation coefficients

^bOnly healthy controls without prolapse

^cP<.001

^dP <.01

^eP <.05

Values in bold indicate correlations that were statistically significant; Values in parentheses indicate % of total variance explained