Table 1.

Changes in the baseline anal pressure at each 4-mm level from the anal verge and at the anterior and posterior vectors

Length From Anal Verge, cm	Anterior, mmHg	Posterior, mmHg	P
0	12.77	8.8	0.165
0.4	26.92	21.88	0.381
0.8	38.98	38.24	0.946
1.2	60.15	61.01	0.947
1.6	70.86	79.69	0.482
2	67.5	81.16	0.221
2.4	56.02	73.75	0.067
2.8	46.42	71.77	0.014
3.2	40.02	68.96	0.01
3.6	32.84	59.31	0.007
4	27.59	46.44	0.016
4.4	17.92	24.19	0.319
4.8	13.86	14.53	0.904