Composite responders were defined as participants who completed at least 5 out of 7 days with diary entries during the interval of interest and met both of the following criteria: 1) Average daily pain response scores over the past week improved by ≥30% and at least 2 points as compared with the baseline average pain score (average of daily worst abdominal pain the week prior to randomization), 2) Bristol Stool Scale (BSS) score of 3 or 4 on 66% of reported days in the past week. Abdominal pain was assessed on an 11-point scale where: 0=no pain to 10=worst pain imaginable. Stool consistency was assessed using the BSS 7-point scale where: 1=separate hard lumps, 2=sausage shaped but lumpy, 3=sausage-like with cracks on the surface, 4=sausage-like but smooth and soft, 5=soft blobs with clear cut edges, 6=fluffy pieces with ragged edges, and 7=watery with no solid pieces.

Intent to treat (ITT) set was defined as the 754 participants that received at least 1 dose of study drug and had baseline and at least 1 postrandomization daily pain rating and 1 postrandomization Bristol Stool Scale (BSS) rating.

Composite responders were defined as participants who completed at least 5 out of 7 days with diary entries during the interval of interest and met both of the following criteria: 1) Average daily pain response scores over the past week improved by ≥30% and at least 2 points as compared with the baseline average pain score (average of daily worst abdominal pain the week prior to randomization), 2) Bristol Stool Scale (BSS) score of 3 or 4 on 66% of reported days in the past week. The participant recorded their abdominal pain in a daily diary using an 11-point scale where: 0=no pain to 10=worst pain imaginable. The participant recorded stool consistency in a daily diary using the BSS 7-point scale where: 1=separate hard lumps, 2=sausage shaped but lumpy, 3=sausage-like with cracks on the surface, 4=sausage-like but smooth and soft, 5=soft blobs with clear cut edges, 6=fluffy pieces with ragged edges, and 7=watery with no solid pieces.

ITT analysis set was defined as the 754 participants that received at least 1 dose of study drug and had baseline and at least 1 postrandomization daily pain rating and 1 postrandomization Bristol Stool Scale (BSS) rating.

The participant recorded their worst daily pain score in a diary using an 11-point scale where: 0=no pain to 10=worst pain imaginable. The daily scores over the previous week were averaged. A negative change from Baseline indicates improvement.

ITT analysis set was defined as the 754 participants that received at least 1 dose of study drug and had baseline and at least 1 postrandomization daily pain rating and 1 postrandomization Bristol Stool Scale (BSS) rating. Number analyzed is the number of participants with data available at the given time-point.

The patient recorded stool consistency in a daily diary using the BSS 7-point scale where: 1=hard stool to 7=watery diarrhea. The daily scores over the previous week were averaged. A negative change from Baseline indicates improvement.

ITT analysis set was defined as the 754 participants that received at least 1 dose of study drug and had baseline and at least 1 postrandomization daily pain rating and 1 postrandomization Bristol Stool Scale (BSS) rating. Number analyzed is the number of participants with data available at the given time-point.

Participants recorded the number of bowel movements in a daily diary at the same time each day. The number of daily bowel movements over the previous week were averaged. A negative change from Baseline indicates improvement.

ITT analysis set was defined as the 754 participants that received at least 1 dose of study drug and had baseline and at least 1 postrandomization daily pain rating and 1 postrandomization Bristol Stool Scale (BSS) rating. Number analyzed is the number of participants with data available at the given time-point.

Responders were participants that met both of the following criteria on the same week for at least 50% of time on study: 1) average of daily pain scores over the past week improved by ≥30% compared with baseline average in pain score, 2) ≥50% reduction in the number of days over the past week with a BSS score ≥5 compared with Baseline. Participants must also have had at least 5/7 days diary entry to be considered a responder for that week. Abdominal pain was assessed on an 11-point scale where a score of 0=no pain to 10=worst pain imaginable. Stool consistency was assessed using the BSS 7-point scale where: 1=separate hard lumps to 7=watery with no solid pieces. Response rates (percentage of participants) are based on model estimates from the logistic regression.

ITT Analysis Set; Subjects were included in the interval of Weeks 1-4, Weeks 5-8, or Weeks 9-12 if they received at least 1 dose of study medication within that interval.