The change in the weekly normalized CSBM Rate during Weeks 1 through 12 of the Treatment Period from the weekly normalized CSBM Rate obtained during the Pretreatment Period.

The CSBM rate was normalized based on the number of CSBMs occurring in that week, adjusting for differences in the duration of the week and black-out periods (time not covered due to a missed IVRS call) versus 7x24 hours.

The Intent-to-treat (ITT) Population included 419 patients of the Safety Population who also had ≥ 1 post-dose evaluation of the primary efficacy assessment (i.e., CSBM Frequency)

For each week of the Treatment and Posttreatment Periods, a patient was considered a CSBM Responder if for that week the patient 1) completed ≥ 4 days of IVRS questions, 2) had a CSBM rate of ≥ 3 for the week, and 3) had an increase in CSBM rate of ≥ 1 from the baseline weekly CSBM rate.

The ITT Population included 419 patients of the Safety Population who also had ≥ 1 post-dose evaluation of the primary efficacy assessment (i.e., CSBM Frequency).

SBMs were measured daily during the treatment period by patient calls to the IVRS.

The ITT Population included 419 patients of the Safety Population who also had ≥ 1 post-dose evaluation of the primary efficacy assessment (i.e., CSBM Frequency).

Stool consistency analyses were performed using the 7-point Bristol Stool Form Scale (BSFS), whereby a score of 1 = separate hard lumps like nuts (difficult to pass); 2 = sausage shaped but lumpy; 3 = like a sausage but with cracks on surface; 4 = like a sausage or snake, smooth and soft; 5 = soft blobs with clear-cut edges (passed easily); 6 = fluffy pieces with ragged edges, a mushy stool; and 7 = watery, no solid pieces (entirely liquid).

The ITT Population included 419 patients of the Safety Population who also had ≥ 1 post-dose evaluation of the primary efficacy assessment (i.e., CSBM Frequency). 15 patients with no pretreatment spontaneous bowel movements were excluded from the Stool Consistency analysis.

Straining was assessed using a 5-point ordinal scale, whereby a score of 1 = not at all, 2 = a little bit, 3 = a moderate amount, 4 = a great deal, and 5 = an extreme amount.

The ITT Population included 419 patients of the Safety Population who also had ≥ 1 post-dose evaluation of the primary efficacy assessment (i.e., CSBM Frequency). 15 patients with no pretreatment spontaneous bowel movements were excluded from the Straining analysis.

Patients provided a weekly assessment of Degree of Relief of IBS Symptoms using a 7-point balanced scale (1=completely relieved, 2=considerably relieved, 3=somewhat relieved, 4=unchanged, 5=somewhat worse, 6=considerably worse, 7=as bad as I can imagine).

The ITT Population included 419 patients of the Safety Population who also had ≥ 1 post-dose evaluation of the primary efficacy assessment (i.e., CSBM Frequency). 13 patients who dropped out prior to finishing 1 week of the trial have missing data.

During the study, patients provided their self assessment of abdominal pain using a 5-point ordinal scale (1=none, 2=mild, 3=moderate, 4=severe, 5=very severe

The ITT Population included 419 patients of the Safety Population who also had ≥ 1 post-dose evaluation of the primary efficacy assessment (i.e., CSBM Frequency).