Table 3.

Correlation Coefficients for Principal Component (PC) Scores vs Anorectal Variables and Symptoms

	Correlation coefficientsa
*Variable	PC1 (high-anal)	PC2	PC3 (hybrid)	PC4	PC5 (low-rectal)	PC6	PC7
Anal resting pressureb	0.53 c	0.63 c	0.15d	−0.05	−0.15d	−0.22c	−0.09
Length of HPZb	0.17d	0.07	−0.25c	0.89 c	0.27c	−0.08	−0.001
Anal (squeeze – resting) pressureb	0.29c	−0.33c	0.59 c	0.26c	−0.08	0.53c	0.04
Anal squeeze durationb	0.17d	0.57 c	−0.57 c	−0.21c	0.36c	−0.36c	−0.0005
Simulated evacuation: anal  relaxationb	−0.50 c	0.71 c	0.43 c	0.08	0.006	−0.05	0.12c
Simulated evacuation: rectal  pressureb	0.27c	−0.17d	0.46 c	−0.2c	0.73 c	−0.12e	0.003
Simulated evacuation: anal  pressureb	0.88 c	−0.09	−0.24c	−0.1e	−0.14d	−0.12e	0.13d
Balloon expulsion timef	0.28c	0.49	−0.20c	0.04	−0.25c	−0.05	0.07
Stool frequencyf,g	−0.01	−0.01	−0.04	0.01	0.04	−0.23e	−0.03
Hard stoolsf,g	−0.04	−0.008	−0.08	0.07	0.04	0.05	0.02
Straining during defecationf,g	0.72	0.02	0.82	0.19	0.73	0.68	0.79
Sense of incomplete evacuationf,g	−0.04	−0.01	−0.009	−0.04	0.027	−0.07	0.01
Anorectal blockage during  defecationf,g	−0.02	−0.12	−0.07	−0.01	−0.13c	0.03	0.02
Anal digitationf,g	0.03	0.04	−0.03	−0.03	−0.005	0.2e	−0.01

HPZ, high-pressure zone.

^aCorrelation coefficients with an absolute value of 0.4 or greater, which indicates that the variable is correlated substantially with the factor, are shown in bold.

^bPearson correlation coefficients.

^cP < .001.

^dP < .01.

^eP < .05.

^fSpearman correlation coefficient.

^gPatients only.