Neuromodulation for Accidental Bowel Leakage

Fecal Incontinence Clinical Trial

— NOTABLe  

Official title:

Neuromodulation for Accidental Bowel Leakage

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03278613
• Other study ID #: 12865-29
• Secondary ID: 2U24HD069031-062
• Status: Completed
• Phase: N/A
• Start date: February 9, 2018
• Est. completion date: March 9, 2020

Study information

• Verified date: April 2020
• Source: NICHD Pelvic Floor Disorders Network
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study is a multi-center, randomized clinical trial of women with refractory accidental bowel leakage (ABL) symptoms who have failed to achieve satisfactory symptom control from 2 first-line treatments for ABL: supervised pelvic muscle training (PMT) and constipating medication. The purpose of this study is to compare percutaneous tibial nerve stimulation (PTNS) to a validated sham to determine if PTNS is effective for the treatment of fecal incontinence (FI) in women.

The investigators will test the null hypothesis that change from baseline in St. Mark's (Vaizey) score after 12 weeks of stimulation is not significantly different in women with symptomatic ABL receiving PTNS treatments compared to women receiving sham PTNS treatments.

Description:

The overarching goal of this randomized clinical trial is to determine if PTNS is more effective than sham PTNS for the treatment of FI in women after 12 weeks of treatment and 1 year after initiating treatment. This is a two-part trial with a Run-In Phase prior to randomization. The trial has the following primary aim:

To determine whether the change from baseline in St. Mark's (Vaizey) score in women with symptomatic ABL undergoing PTNS differs from sham after 12 weeks of stimulation.

Additional secondary aims include:

1. To compare changes from baseline in self-reported functional outcomes after 12 weekly stimulation sessions in both PTNS and sham groups in Part 1.

2. To determine whether symptom relief amongst study "responders" can be sustained for one year with maintenance treatments in Part II.

3. To determine the impact of completing a bowel diary and receiving education on FI on symptom severity.

4. To determine the ability of the PFDN ABL phone app bowel diary to detect changes from baseline in fecal incontinence episodes recorded to after 12 weeks of stimulation sessions.

5. To determine the association between St. Mark's score and both fat and fiber intake alone and in combination.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 166
• Est. completion date: March 9, 2020
• Est. primary completion date: March 9, 2020
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Women = 18 years of age

• FI symptoms = 3 months

• Baseline St. Mark's score of = 12

• Attended = 2 supervised PMT for ABL

• Intolerance, unwillingness, or inadequate response to constipating medications

• Current negative colon cancer screening based on the USPSTF's recommendation for colorectal cancer screening (2016)

Exclusion Criteria:

• Previous PTNS treatment

• History of uncontrolled diarrhea in the past 3 months (usual or most common stool type over the preceding 3 months of 7 on the Bristol Stool Form Scale)

• History of severe constipation in the past 3 months (usual or most common stool type over the preceding 3 months of 1 on the Bristol Stool Form Scale)

• History of inflammatory bowel disease (includes Crohn's disease and ulcerative colitis, but does not include irritable bowel disease)

• Unrepaired rectovaginal fistula/chronic 4th degree laceration

• Full thickness rectal prolapse

• History of congenital anorectal malformation

• History of bowel resection surgery for any indication

• Minor anal procedures within 6 months for treatment of ABL (injection of bulking agent or radiofrequency energy) or ligation of hemorrhoids

• Prior pelvic or abdominal radiation

• Diagnosis of cancer of the descending colon or anus

• Diagnosis of cancer in the region where the PTNS or sham needles or surface electrodes would be placed

• Pacemaker, implantable defibrillator

• Current use of Interstim sacral nerve stimulator or TENS in the pelvic region, back, or legs

• Clinically significant neurological disorders known to affect anal continence

• Coagulopathy

• Severe peripheral edema preventing accurate placement of PTNS needles

• Chronic swollen, infected, inflamed skin or skin eruptions (e.g., phlebitis, thrombophlebitis, varicose veins) in the region where the PTNS or sham needles or surface electrodes would be placed

• Metal implant in foot/toes near TENS electrode location

• Marked sensory deficit (numbness) of feet or ankles in the region where the PTNS or sham needles or surface electrodes would be placed

• Childbirth within the last 3 months

• Pregnant or planning to become pregnant during the study duration 1 year; a urine pregnancy test will be performed and must be negative by the first intervention visit if the participant is of childbearing potential

• Unwilling to use acceptable form of contraceptive if the participant is of childbearing potential

• Participation in another intervention trial impacting bowel function

• Inability to provide informed consent, complete questionnaires independently, or to attend intervention sessions

• Unable or unwilling to complete the bowel diary in Run-In Phase (valid diary defined as data from = 10 of 14 days with minimum of 3 consecutive days per week)

• Unwilling to download bowel diary app onto smartphone if the participant owns a smartphone

• Visual impairment prohibiting reading the paper diary, the smart phone screen

• Unable to speak, read, or write in English or Spanish at a basic level

Related Conditions & MeSH terms

• Bowel Incontinence
• Fecal Incontinence

Intervention

Device:
• ES-130
The ES-130 device will be used for the indication of "Posterior Tibial Nerve Stimulation for the treatment of fecal incontinence" using the FDA-approved protocol for treatment of urge urinary incontinence (UUI) in the PFDN NOTABLe study. There is no PTNS device cleared by the FDA for the indication of FI treatment; therefore, this is considered an investigational device.

Locations

Country	Name	City	State
United States	University of Alabama at Birmingham	Birmingham	Alabama
United States	University of Texas Southwestern Medical Center	Dallas	Texas
United States	Kaiser Permanente -- Downey	Downey	California
United States	Duke University, Duke Division of Urogynecology and Reconstructive Pelvic Surgery	Durham	North Carolina
United States	University of California at San Diego, UCSD Women's Pelvic Medicine Center	La Jolla	California
United States	University of Pennsylvania	Philadelphia	Pennsylvania
United States	Magee-Women's Hospital, Department of Obstetrics and Gynecology	Pittsburgh	Pennsylvania
United States	Brown/ Women and Infants Hospital of Rhode Island, Center for Women's Pelvic Medicine and Reconstructive Surgery	Providence	Rhode Island
United States	Kaiser Permanente -- San Diego	San Diego	California

Sponsors (11)

Lead Sponsor	Collaborator
NICHD Pelvic Floor Disorders Network	Duke University, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), Kaiser Permanente, RTI International, University of Alabama at Birmingham, University of California, San Diego, University of Pennsylvania, University of Pittsburgh, University of Texas Southwestern Medical Center, Women and Infants Hospital of Rhode Island

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Change From Baseline ABLe Liquid Score	The ABLE Liquid Score is a subscale of the validated Accidental Bowel Leakage Evaluation (ABLE) questionnaire which assesses the impact and severity of the leakage of liquid stool. Minimum score is 0 = no problem with liquid stool leakage; maximum score is 4 = frequent, bothersome leakage of large amounts of liquid stool. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline ABLe Solid Score	The ABLE Solid Score is a subscale of the validated Accidental Bowel Leakage Evaluation (ABLE) questionnaire which assesses the impact and severity of the leakage of solid stool. Minimum score is 0 = no problem with solid stool leakage; maximum score is 4 = frequent, bothersome leakage of large amounts of solid stool. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline ABLe Mucus Score	The ABLE Mucus Score is a subscale of the validated Accidental Bowel Leakage Evaluation (ABLE) questionnaire which assesses the impact and severity of the leakage of mucus from the rectum. Minimum score is 0 = no problem with mucus leakage from the rectum; maximum score is 4 = frequent, bothersome leakage of large amounts of mucus from the rectum. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline ABLe Gas Score	The ABLE Gas Score is a subscale of the validated Accidental Bowel Leakage Evaluation (ABLE) questionnaire which assesses the impact and severity of the leakage of gas from the rectum. Minimum score is 0 = no problem with gas leakage from the rectum; maximum score is 4 = frequent and bothersome leakage of gas from the rectum. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline ABLe Predictability/Awareness Score	The ABLE Predictability/Awareness Score is a subscale of the validated Accidental Bowel Leakage Evaluation (ABLE) questionnaire which assesses the predictability of bowel leakage events. Minimum score is 0 = no problems with leakage; maximum score is 4 = leakage without awareness or predictability. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline ABLe Control Score	The ABLE Control Score is a subscale of the validated Accidental Bowel Leakage Evaluation (ABLE) questionnaire which assesses the ability to control bowel movements. Minimum score is 0 = no problems with urgency to empty bowels wthout warning; maximum score is 4 = frequent and bothersome urgency to empty bowels wthout warning.	8 and 12 Weeks
Other	Change From Baseline ABLe Ancillary Bowel Symptoms Score	The ABLE Ancillary Bowel Symptoms Score is a subscale of the validated Accidental Bowel Leakage Evaluation (ABLE) questionnaire which assesses the frequency and impact of ancially bowel symptoms. Minimum score is 0 = no problems with pain or incomplete emptying; maximum score is 4 = frequent and bothersome pain or incomplete emptying.	8 and 12 Weeks
Other	Change From Baseline ABLe Overall Score	The ABLE Overall Score is the summary score of the validated Accidental Bowel Leakage Evaluation (ABLE) questionnaire which assesses the frequency and impact of accidental bowel leakage and related symptoms. Minimum score is 0 = no problems with bowel leakage and related symptoms; maximum score is 4 = frequent and bothersome problems with bowel leakage and related symptoms.	8 and 12 Weeks
Other	Patient Global Symptom Control	The Patient Global Symptom Control (PGSC) is a patient-reported measure of perceived agreement that symptoms are under control, as assessed on a scale of 1 (Disagree Strongly) to 5 (Agree Strongly). Included here are participants who had reported disagreements as indicated by a rating of 1 (Disagree Strongly) or 2 (Disagree)	Baseline and 4, 8, and 12 Weeks
Other	Change From Baseline FIQL Lifestyle Score	The FIQL Lifestyle Score is a subscale of the validated Fecal Incontinence Quality of Life (FIQL) questionnaire which assesses the impact of accidental bowel leakage on quality of life. Minimum score is 1 = lower functional quality of life; maximum score is 5 = higher functional quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline FIQL Coping Score	The FIQL Coping Score is a subscale of the validated Fecal Incontinence Quality of Life (FIQL) questionnaire which assesses the impact of accidental bowel leakage on quality of life. Minimum score is 1 = lower functional quality of life; maximum score is 5 = higher functional quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline FIQL Depression Score	The FIQL Depression Score is a subscale of the validated Fecal Incontinence Quality of Life (FIQL) questionnaire which assesses the impact of accidental bowel leakage on quality of life. Minimum score is 1 = lower functional quality of life; maximum score is 5 = higher functional quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline FIQL Embarrassment Score	The FIQL Embarrassment Score is a subscale of the validated Fecal Incontinence Quality of Life (FIQL) questionnaire which assesses the impact of accidental bowel leakage on quality of life. Minimum score is 1 = lower functional quality of life; maximum score is 5 = higher functional quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline FISI Patient Score	The FISI Patient Score is a summary score of the validated Fecal Incontinence Severity Index questionnaire which provides a summary metric of the severity of fecal incontinence from the patient's perspective. Minimum score is 0 = no fecal incontinence; maximum score is 61 = very severe fecal incontinence. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline FISI Doctor Score	The FISI Doctor Score is a summary score of the validated Fecal Incontinence Severity Index questionnaire which provides a summary metric of the severity of fecal incontinence from the doctor's perspective. Minimum score is 0 = no fecal incontinence; maximum score is 57 = very severe fecal incontinence. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline MMHQ Incontinence Impact Score	The MMHQ Incontinence Impact Score is a subscale of the validated Modified-Manchester Health questionnaire (MMHq) which provides a health-related quality of life rating. Minimum score is 0 = high quality of life; maximum score is 100 = low quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline MMHQ Role Limitations Score	The MMHQ Role Limitations Score is a subscale of the validated Modified-Manchester Health questionnaire (MMHq) which provides a health-related quality of life rating. Minimum score is 0 = high quality of life; maximum score is 100 = low quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline MMHQ Physical Limitations Score	The MMHQ Physical Limitations Score is a subscale of the validated Modified-Manchester Health questionnaire (MMHq) which provides a health-related quality of life rating. Minimum score is 0 = high quality of life; maximum score is 100 = low quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline MMHQ Social Limitations Score	The MMHQ Social Limitations Score is a subscale of the validated Modified-Manchester Health questionnaire (MMHq) which provides a health-related quality of life rating. Minimum score is 0 = high quality of life; maximum score is 100 = low quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline MMHQ Personal Relationship Score	The MMHQ Personal Relationship Score is a subscale of the validated Modified-Manchester Health questionnaire (MMHq) which provides a health-related quality of life rating. Minimum score is 0 = high quality of life; maximum score is 100 = low quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline MMHQ Emotional Function Score	The MMHQ Emotional Function Score is a subscale of the validated Modified-Manchester Health questionnaire (MMHq) which provides a health-related quality of life rating. Minimum score is 0 = high quality of life; maximum score is 100 = low quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline MMHQ Sleep/Energy Score	The MMHQ Sleep/Energy Score is a subscale of the validated Modified-Manchester Health questionnaire (MMHq) which provides a health-related quality of life rating. Minimum score is 0 = high quality of life; maximum score is 100 = low quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline MMHQ Severity Measures Score	The MMHQ Severity Measures Score is a subscale of the validated Modified-Manchester Health questionnaire (MMHq) which provides a health-related quality of life rating. Minimum score is 0 = high quality of life; maximum score is 100 = low quality of life. Change from baseline is calculated as Week [8 or 12] Score minus the score at baseline.	8 and 12 Weeks
Other	Change From Baseline CRAIQ Score	The Pelvic Floor Impact Questionnaire short form (PFIQ-7) measuring the impact of bladder, bowel, and vaginal symptoms on a woman's daily activities, relationships and emotions is composed of 3 scales of 7 questions each: the Urinary Impact Questionnaire (UIQ; range 0-100), the Pelvic Organ Prolapse Impact Questionnaire (POPIQ; range 0-100), and the Colorectal-Anal Impact Questionnaire (CRAIQ; range 0-100). Scores are calculated by multiplying the mean value of all answered questions for a scale by 100 divided by 3. The range of responses is: 0-100 with 0 (least negative impact) to 100 (most negative impact). Change = (Week [8, 12] Score - Baseline Score). Lower scores indicate better function / fewer symptoms.	8 and 12 Weeks
Other	Change From Baseline POPIQ Score	The Pelvic Floor Impact Questionnaire short form (PFIQ-7) measuring the impact of bladder, bowel, and vaginal symptoms on a woman's daily activities, relationships and emotions is composed of 3 scales of 7 questions each: the Urinary Impact Questionnaire (UIQ; range 0-100), the Pelvic Organ Prolapse Impact Questionnaire (POPIQ; range 0-100), and the Colorectal-Anal Impact Questionnaire (CRAIQ; range 0-100). Scores are calculated by multiplying the mean value of all answered questions for a scale by 100 divided by 3. The range of responses is: 0-100 with 0 (least negative impact) to 100 (most negative impact). Change = (Week [8, 12] Score - Baseline Score). Lower scores indicate better function / fewer symptoms.	8 and 12 Weeks
Other	Change From Baseline UIQ Score	The Pelvic Floor Impact Questionnaire short form (PFIQ-7) measuring the impact of bladder, bowel, and vaginal symptoms on a woman's daily activities, relationships and emotions is composed of 3 scales of 7 questions each: the Urinary Impact Questionnaire (UIQ; range 0-100), the Pelvic Organ Prolapse Impact Questionnaire (POPIQ; range 0-100), and the Colorectal-Anal Impact Questionnaire (CRAIQ; range 0-100). Scores are calculated by multiplying the mean value of all answered questions for a scale by 100 divided by 3. The range of responses is: 0-100 with 0 (least negative impact) to 100 (most negative impact). Change = (Week [8, 12] Score - Baseline Score). Lower scores indicate better function / fewer symptoms.	8 and 12 Weeks
Other	Change From Baseline PFIQ Score	The Pelvic Floor Impact Questionnaire short form (PFIQ-7) measuring the impact of bladder, bowel, and vaginal symptoms on a woman's daily activities, relationships and emotions is composed of 3 scales of 7 questions each: the Urinary Impact Questionnaire (UIQ; range 0-100), the Pelvic Organ Prolapse Impact Questionnaire (POPIQ; range 0-100), and the Colorectal-Anal Impact Questionnaire (CRAIQ; range 0-100). Scores are calculated by multiplying the mean value of all answered questions for a scale by 100 divided by 3. The range of responses is: 0-100 with 0 (least negative impact) to 100 (most negative impact). Change = (Week [8, 12] Score - Baseline Score). Lower scores indicate better function / fewer symptoms.	8 and 12 Weeks
Other	Change From Baseline PAC-SYM Abdominal Score	The Patient Assessment of Constipation - Symptom (PAC-SYM) ia a validated form measuring the frequency and severity of chronic constipation. It consists of an overall score (range: 0-4) consisting of 3 subscales across 12 question: the Abdominal score (range 0-4), the Rectal Score (range 0-4), and the Stool Score (range 0-4). Scores are calculated as the mean of non-mising responses. The range of responses is: 0-4 with 0 (Absent) to 4 (Very sever). Change = (Week 12 Score - Baseline Score). Lower scores indicate less severe constipation.	12 Weeks
Other	Change From Baseline PAC-SYM Rectal Score	The Patient Assessment of Constipation - Symptom (PAC-SYM) ia a validated form measuring the frequency and severity of chronic constipation. It consists of an overall score (range: 0-4) consisting of 3 subscales across 12 question: the Abdominal score (range 0-4), the Rectal Score (range 0-4), and the Stool Score (range 0-4). Scores are calculated as the mean of non-mising responses. The range of responses is: 0-4 with 0 (Absent) to 4 (Very sever). Change = (Week 12 Score - Baseline Score). Lower scores indicate less severe constipation.	12 Weeks
Other	Change From Baseline PAC-SYM Stool Score	The Patient Assessment of Constipation - Symptom (PAC-SYM) ia a validated form measuring the frequency and severity of chronic constipation. It consists of an overall score (range: 0-4) consisting of 3 subscales across 12 question: the Abdominal score (range 0-4), the Rectal Score (range 0-4), and the Stool Score (range 0-4). Scores are calculated as the mean of non-mising responses. The range of responses is: 0-4 with 0 (Absent) to 4 (Very sever). Change = (Week 12 Score - Baseline Score). Lower scores indicate less severe constipation.	12 Weeks
Other	Change From Baseline PAC-SYM Total Score	The Patient Assessment of Constipation - Symptom (PAC-SYM) is a validated form measuring the frequency and severity of chronic constipation. It consists of an overall score (range: 0-4) consisting of 3 subscales across 12 question: the Abdominal score (range 0-4), the Rectal Score (range 0-4), and the Stool Score (range 0-4). Scores are calculated as the mean of non-missing responses. The range of responses is: 0-4 with 0 (Absent) to 4 (Very severe). Change = (Week 12 Score - Baseline Score). Lower scores indicate less severe constipation.	12 Weeks
Other	Change From Baseline PISQ-IR NSA-PR Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Not Sexually Active-Partner Related (NSA-PR) ranges from 1 to 4 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR NSA-CS Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Not Sexually Active-Condition Specific (NSA-CS) ranges from 1 to 4 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR NSA-GQA Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Not Sexually Active-Global Quality Rating (NSA-GQA) ranges from 1 to 4.5 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR NSA-CI Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Not Sexually Active-Condition Impact (NSA-CI) ranges from 1 to 4 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR SA-AO Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Sexually Active-Arousal Orgasm (SA-AO) ranges from 1 to 5 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR SA-PR Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Sexually Active-Partner Related (SA-PR) ranges from 1 to 4 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR SA-CS Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Sexually Active-Condition Specific (SA-CS) ranges from 1 to 5 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR SA-GQR Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Sexually Active-Global Quality Rating (SA-GQR) ranges from 1 to 4.75 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR SA-CI Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Sexually Active-Condition Impact (SA-CI) ranges from 1 to 4 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR SA-D Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Sexually Active-Desire (SA-D) ranges from 1 to 5 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline PISQ-IR SA-AVG Score	The Pelvic Organ Prolapse Incontinence Sexual Questionnaire, IUGA-revised measures the impact of incontinence symptoms on sexual function and satisfaction. The Sexually Active-Average (SA-AVG) ranges from 1 to 5 with higher scores indicating greater sexual function. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline FIAI Hygiene Index Score	The Fecal Incontinence Adaptation Index (FIAI) is a validated form which measures the adaptation behavios resulting from fecal incontinence. It consists of two subscales: Hygiene (range: 0-100) and Avoidance (range: 0-100). Scores are cal calculated as the average of the non-missing responses multiplied by 25. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline FIAI Avoidance Index Score	The Fecal Incontinence Adaptation Index (FIAI) is a validated form which measures the adaptation behavios resulting from fecal incontinence. It consists of two subscales: Hygiene (range: 0-100) and Avoidance (range: 0-100). Scores are cal calculated as the average of the non-missing responses multiplied by 25. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline SF-12 Aggregate Physical Score	The 12-Item Short-Form Health Survey (SF-12) is a validated survey which assesses overall physical and mental health. The Aggregate Physical Score ranges from 24 to 56.6 with higher scores indicating greater physical health. The outcome is calculated as the difference in score at 12 weeks and the score at baseline.	12 Weeks
Other	Change From Baseline SF-12 Aggregate Mental Score	The 12-Item Short-Form Health Survey (SF-12) is a validated survey which assesses overall physical and mental health. The Aggregate Mental Score ranges from 19.06 to 60.86 with higher scores indicating greater mental health. The outcome is calculated as the difference in score at 12 weeks and the score at baseline	12 Weeks
Primary	Change From Baseline St. Mark's (Vaizey) Score	The primary outcome measure is the change from baseline in St. Mark's (Vaizey) Score 12 weeks after treatment initiation to compare the outcomes of post-tibial nerve stimulation (PTNS) versus sham stimulation. The St. Mark's (Vaizey) score, published in 1999, is commonly used in clinical studies and reports and was based on the Jorge-Wexner score but added two further items for assessment: the use of constipating medication and the presence of fecal urgency. Minimum score is 0 = perfect continence; maximum score is 24 = totally incontinent. Change from baseline is calculated as Week [4, 8, or 12] Score minus the score at baseline.	4, 8, and 12 Weeks
Secondary	Responder to Treatment	Responder status is based on the primary chnage from St. Mark's Score. A responder is defined as any particpant with at least a 4 point reduction in score compared to their baseline score	4, 8, and 12 Weeks
Secondary	Change From Baseline Number of Fecal Incontinence Events Per Week	Based on data collected from participant-completed diaries at baseline, 8, and 12 weeks, the outcome variable is computed as the difference in number of fecal incontinence episodes per week at 8 and 12 weeks and the number of fecal incontinence episodes at baseline.	8 and 12 Weeks
Secondary	Change From Baseline Number of Urge Fecal Incontinence Events Per Week	Based on data collected from participant-completed diaries at baseline, 8, and 12 weeks, the outcome variable is computed as the difference in number of urge fecal incontinence episodes per week at 8 and 12 weeks and the number of urge fecal incontinence episodes at baseline.	8 and 12 Weeks
Secondary	Change From Baseline Number of Bowel Movements Per Week	Based on data collected from participant-completed diaries at baseline, 8, and 12 weeks, the outcome variable is computed as the difference in number of bowel movements per week at 8 and 12 weeks and the number of bowel movements at baseline.	8 and 12 Weeks
Secondary	Change From Baseline Number of Urge Bowel Movements Per Week	Based on data collected from participant-completed diaries at baseline, 8, and 12 weeks, the outcome variable is computed as the difference in number of urge bowel movements per week at 8 and 12 weeks and the number of urge bowel movements at baseline.	8 and 12 Weeks
Secondary	Change From Baseline Number of Days Without Fecal Incontinence Episodes Per Week	Based on data collected from participant-completed diaries at baseline, 8, and 12 weeks, the outcome variable is computed as the difference in number of days without fecal incontinence episodes per week at 8 and 12 weeks and the number of days without fecal incontinence episodes at baseline.	8 and 12 Weeks
Secondary	50% Improvement in Fecal Incontinence Episodes Per Week	Based on data collected from participant-completed diaries at baseline, 8, and 12 weeks, the outcome is calculated as any participant with a 50% reduction in fecal incontinence episodes per week at 8 and 12 weeks compared to the fecal incontinence episodes at baseline	8 and 12 Weeks
Secondary	75% Improvement in Fecal Incontinence Episodes Per Week	Based on data collected from participant-completed diaries at baseline, 8, and 12 weeks, the outcome is calculated as any participant with a 75% reduction in fecal incontinence episodes per week at 8, and 12 weeks compared to the fecal incontinence episodes at baseline.	8 and 12 Weeks
Secondary	Patient Global Impression-Improvement	The Patient Global Impression of Improvement (PGI-I) is a patient-reported measure of perceived improvement with treatment, as assessed on a scale of 1 (very much better) to 7 (very much worse). Included here are participants who had improvement as indicated by a rating of 1 (very much better) or 2 (much better)	4, 8, and 12 Weeks