Table 4.

Statistical correlations between late gastrointestinal toxicities (n=14) and anorectal manometric findings using binary logistic regression

Variable	p-value
	Pre-RT	Post-RT	Pre-RT–Post-RT
Resting anal pressure	0.039	0.826	0.795
Squeeze anal pressure	0.039	0.826	0.398
Perception threshold volume	> 0.999	> 0.999	0.807
Urge to defecate volume	0.051	0.029	0.753
Mean anal canal length	0.728	0.164	0.505
IASPa)	0.937	0.221	0.614
Resting EASP	0.099	0.842	0.195
Maximum EASP	0.104	0.380	0.518

RT, radiotherapy; IASP, internal anal sphincter pressure; EASP, external anal sphincter pressure.

^a)Evaluation was performed only in 38 patients due to missing values.