Biofeedback pelvic floor muscle training versus posterior tibial nerve electrostimulation in treatment of functional obstructed defecation: a prospective randomized clinical trial

Egyptian Rheumatology and Rehabilitation

Table 2 Comparison between the before and after treatment assessments of both groups and between both groups in each phase regarding different assessment questionnaires and time of toileting

Different assessment questionnaires and time of toileting	Pretreatment assessment mean ± SD	Post-treatment assessment mean ± SD	Test of significance^b	P
MODS
BF group (n = 21 patients)	12.71 ± 4.73	6.66 ± 6.06	− 4.039	≤ 0.0001*
PTNS group (n = 20 patients)	14.05 ± 6.09	10.00 ± 7.73	− 3.749	≤ 0.0001*
Test of significance^a	− 0.693	− 1.596
P	0.488	0.111
PAC-QoL
BF group (n = 21 patients)	44.71 ± 13.98	22.14 ± 16.80	− 4.019	≤ 0.0001*
PTNS group (n = 20 patients)	41.05 ± 15.29	31.40 ± 22.76	− 3.467	0.001*
Test of significance^a	− 0.744	− 1.019
P	0.457	0.308
Time of toileting (minutes)
BF group (n = 21 patients)	25.76 ± 16.90	14.47 ± 12.33	− 4.023	≤ 0.0001*
PTNS group (n = 20 patients)	29.35 ± 20.65	18.95 ± 16.09	− 3.925	≤ 0.0001*
Test of significance^a	− 0.709	− 0.852
P	0.478	0.394

MODS Modified obstructed defecation score, BF biofeedback pelvic floor muscle training, PTNS posterior tibial nerve electrostimulation, n Number of patients, PAC-QoL Patient Assessment of Constipation-Quality of life questionnaire, SD standard deviation
*P ≤ 0.05 is considered significant
^aValue of Mann-Whitney test. It compares the results of the pretreatment assessment between both groups, as well as, the results of the post-treatment assessment between both groups
^bValue of Wilcoxon signed ranks test. It compares the results of the post-treatment assessment with the results of the pretreatment assessment within each group