Table 1.

Comparison of Anorectal Parameters in All Participants

Variable	HRM	Portable Manometry	HRM vs Portable Manometry
			CCC (95% CI)	Bland- Altmana	P valueb
Anal average rest pressure	77±4	54±3	.45 (.29, .58)	.04	0.0001
Maximum anal squeeze	158±8	125±17	.60 (.46, .72)	.12	0.0001
Anal pressure during Valsalva maneuver	126±8	72±4	.29 (.16, .34)	<0.0001	0.0001
Simulated evacuation without rectal distention
Rectal pressure	37±4	35±3	.62 (0.43, .76)	.02	0.67
Anal pressure	80±4	53±3	.22 (.04, .39)	.32	0.0001
Rectoanal gradient	−42±5	−17±4	.22 (.02, .41)	.34	0.0001
Anal relaxation	8±6	−24±8	.39 (.19, .56)	.04	.0001
Simulated evacuation with rectal distention
Rectal pressure	30±4	41±3	.31 (.07, .51)	.04	0.0001
Anal pressure	75±5	47±3	.15 (−.01, .30)	.0002	0.0001
Rectoanal gradient	−45±6	−6±4	.25 (.10, .40)	.003	0.0001
Anal relaxation	12±4	−69±46	.05 (.01, .09)	<.0001	.081
First sensation (mL)	55±4	49±4	0.53 (.31, .70)	.16	0.12
Desire to defecate (mL)	85±5	82±4	0.53 (.29, .70)	.07	0.5
Urgency (mL)	121±7	113±5	0.46 (.20, .66)	.03	0.37

Abbreviation: HRM, high-resolution manometry

^aTest for (Pearson) correlation of differences versus overall mean.

^bPaired comparison between HRM and portable manometry