Characteristics, median (range) | Spontaneous delivery (n = 97) | Caesarean delivery (n = 30) | P |
---|---|---|---|
Rest pressure of the rectum | 27.4 (19.3, 47.8) | 29.6 (18.8, 44.7) | 0.923 |
Rest pressure of the anal sphincter | 87.8 (64.3, 105.5) | 84.0 (64.7, 102.1) | 0.712 |
Length of the anal sphincter | 2.3 (1.6, 2.7) | 2.2 (1.3, 2.7) | 0.585 |
Effective length of the anal sphincter | 1.4 (0.8, 2.2) | 1.6 (0.9, 2.1) | 0.849 |
First sensation volume | 20.0 (15.0, 20.0) | 20.0 (15.0, 20.0) | 0.906 |
First threshold for the desire to defecate | 40.0 (30.0, 60.0) | 50.0 (30.0, 60.0) | 0.398 |
Threshold of defecate distress | 90.0 (60.0, 120.0) | 110.0 (60.0, 120.0) | 0.409 |
Perception threshold of the maximum volume | 120.0 (115.0, 180.0) | 160.0 (120.0, 180.0) | 0.238 |
Rectal compliance | 4.0 (2.1, 7.6) | 3.7 (2.4, 9.6) | 0.865 |
Relaxation rate of the anal sphincter | 6.2 (0.0, 20.0) | 10.3 (0.0, 21.6) | 0.393 |
Pressure gradient of the rectum-anal sphincter | -40.7 (-67.4, -16.6) | -49.3 (-59.6, -4.0) | 0.867 |
Maximum squeeze press (MSP) | 104.7 (80.3, 130.7) | 121.1 (98.2, 142.5) | 0.133 |
Change in contracting sphincter pressure | 14.3 (4.5, 25.0) | 19.6 (13.4, 40.0) | 0.023 |