Table 2.
Comparison of anorectal pressures measured with the diagnostic catheter in women and men†
| Variable | Women, n | Men, n | Women Mean ± SD (10th, 90th percentile) |
1st, 3rd quartile | Men Mean ± SD (10th, 90th percentile) |
1st, 3rd quartile | P-value |
|---|---|---|---|---|---|---|---|
| Anal resting pressure | 74 | 34 | 67 ± 22 (42, 97) | 51, 81 | 73 ± 20 (50, 94) | 64, 88 | 0.11 |
| Anal squeeze pressure‡ | 74 | 34 | 150 ± 56 (81, 215) | 108, 181 | 223 ± 84 (149, 310) | 174, 243 | <0.0001 |
| Anal squeeze increment‡,§ | 74 | 34 | 77 ± 49 (25, 150) | 43, 105 | 143 ± 81 (71, 238) | 95, 179 | <0.0001 |
| BET (sec) | 74 | 34 | 15 ± 12 | 5, 18 | 13 ± 11 | 6, 16 | 0.72 |
| Evacuation without rectal distention | |||||||
| Rectal pressure | 72 | 32 | 42 ± 21 (18, 72) | 26, 55 | 64 ± 32 (24, 100) | 45, 80 | 0.0004 |
| Anal pressure | 73 | 33 | 67 ± 20 (42, 94) | 53, 79 | 72 ± 26 (54, 104) | 55, 86 | 0.55 |
| Rectoanal gradient | 72 | 32 | −26 ± 25 (−57, 6) | −41, −8 | −16 ± 26 (−44, 24) | −33, −2 | 0.12 |
| Anal relaxation (%) | 73 | 33 | −6 ± 33 (−51, 24) | −18, 14 | −10 ± 37 (−78, 20) | −14, 11 | 0.70 |
| Defecation index¶ | 73 | 33 | .63 ± .38 (0.22, 1.13) | 0.30, 0.84 | .80 ± .47 (0.30, 1.46) | 0.51, 0.97 | 0.07 |
| Evacuation with rectal distention | |||||||
| Rectal pressure | 73 | 33 | 46 ± 28 (13, 87) | 26, 58 | 61 ± 34 (27, 96) | 39, 75 | 0.02 |
| Anal pressure | 73 | 33 | 61 ± 19 (36, 83) | 46, 74 | 69 ± 26 (42, 91) | 51, 81 | 0.14 |
| Rectoanal gradient | 73 | 33 | −18 ± 26 (−55, 13) | −35, −2 | −15 ± 23 (−35, 18) | −30, −1 | 0.56 |
| Anal relaxation (%) | 74 | 34 | −8 ± 35 (−35, 24) | −17, 10 | −9 ± 32 (−59, 27) | −20, 13 | 0.99 |
| Defecation index¶ | 74 | 34 | .71 ± .53 (0.17, 1.28) | 0.37, 0.95 | .76 ± .42 (0.34, 1.25) | 0.56, 0.97 | 0.34 |
| Valsalva maneuver | |||||||
| Anal pressure | 73 | 33 | 106 ± 35 (65, 150) | 82, 130 | 112 ± 45 (67, 150) | 94, 128 | 0.55 |
| Rectal sensation | |||||||
| First sensation (mL) | 74 | 34 | 46 ± 25 (20, 80) | 30, 60 | 41 ± 16 (20, 60) | 30, 58 | 0.51 |
| Desire to defecate (mL) | 74 | 34 | 87 ± 34 (50, 137) | 60, 100 | 89 ± 32 (60, 127) | 60, 100 | 0.70 |
| Urgency (mL) | 74 | 34 | 124 ± 37 (80, 180) | 100, 160 | 137 ± 39 (80, 180) | 100, 170 | 0.10 |
| Pain (mL) | 55 | 34 | 133 ± 35 (84, 180) | 100, 160 | 149 ± 37 (86, 180) | 130, 180 | 0.02 |
†
Values are mmHg unless stated otherwise.
‡
These values are derived from the squeeze maneuver with the highest squeeze pressure;
§
Squeeze increment is (anal squeeze pressure – anal resting pressure).
¶
No unit.