Skip to main content
. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: Neurogastroenterol Motil. 2013 Feb 14;25(6):502–508. doi: 10.1111/nmo.12095

Table 2.

A. ARM Characteristics and Balloon Expulsion Tests in all Patients with DD [data show
median (IQR), other than proportions able to expel the balloon]
Males; [n] Females; [n] p-value
Maximum anal resting
pressure (mm Hg)
87.8 (67.6, 111.0); [67] 82.4 (64, 98.6); [332] 0.04*
   10–90th percentile 56.6–131.4 49.3–116.5
Maximum anal squeeze
pressure (mm Hg)
182.4 (155.1, 244.1);
[67]
128.7 (102.1, 159.6);
[329]
<0.01*
   10–90th percentile 114.0–299.3 77.2–205.0
Added balloon weight (g) 500.0 (188.0, 564.0);
[67]
564.0 (376.0, 564.0);
[323]
censored
   10–90th percentile 0.0–586.0 188.0–586.0
Able to expel balloon
with 0g added weight (%)
23.9; [16] 7.4; [24] <0.01#
Unable to expel balloon
with 0g added weight (%)
76.1; [51] 92.6; [299]
B. ARM Characteristics and Balloon Expulsion Tests in Patients with DD and Normal Colonic
Transit at 24 Hours (GC >1.47, 10th percentile of 208 healthy volunteers)
Males; [n] Females; [n] p-value
Maximum anal resting
pressure (mm Hg)
89.1 (64.3, 114.8); [40] 83.5 (64.9, 98.2);
[176]
0.10*
   10–90th percentile 55.3–133.8 46.8–118.7
Maximum anal squeeze
pressure (mm Hg)
205.1 (164.7, 274.9);
[40]
127.2 (98.5, 157.4);
[176]
<0.01*
   10–90th percentile 136.8–330.8 77.0–205.1
Added balloon weight (g) 500.0 (0, 564.0); [40] 564.0 (340.8, 586);
[172]
censored
   10–90th percentile 0.0–586.0 122.2–586.0
Able to expel balloon
with 0g added weight (%)
27.5; [11] 8.7; [15] <0.01#
Unable to expel balloon
with 0g added weight (%)
72.5; [29] 91.3; [157]
*

Mann-Whitney rank sum test

#

Chi-square test