The Plecanatide Irritable Bowel Syndrome With Constipation Study (IBS-C)

Number of Overall Responders - ITT Population

Time frame · 12 Weeks

An Overall Responder was a patient who was a Weekly Responder (i.e., decrease of 30% from baseline for abdominal pain intensity and an increase of at least one complete spontaneous bowel movement in the same week) for at least 6 of the 12 treatment weeks.

Number of Abdominal Pain Responders for at Least 6 of 12 Treatment Weeks

Time frame · 12 Weeks

An Abdominal Pain Intensity Responder was a patient who had a decrease of 30% from baseline for abdominal pain intensity. Baseline was the mean of non-missing abdominal pain scores recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.

Number of Stool Frequency Responder for at Least 6 of the 12 Treatment Weeks

Time frame · 12 weeks

A Stool Frequency Responder is defined as a patient who experienced an increase of at least one CSBM (complete spontaneous bowel movement) per week from baseline. Baseline was the mean number of CSBMs recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.

Number of Sustained Efficacy Responders

Time frame · 12 weeks

A Sustained Efficacy Responder was a patient who was an Overall Responder who also was a Weekly Responder, i.e., decreased of 30% from baseline for abdominal pain intensity and increased of at least one CSBM (complete spontaneous bowel movement) in the same week for at least 2 of the 4 weeks in month 3 of the Treatment Period.

Change From Baseline in Stool Consistency

Time frame · Baseline and 12-Week

Change from baseline in stool consistency based upon the Bristol Stool Form Scale (BSFS) Rating 1 to 7. Baseline was the mean BSFS score recorded during the 2-week baseline diary assessment period prior to the first dose of study drug. BSFS Rating 1 to 7: 1. Separate hard lumps, like nuts (hard to pass) 2. Sausage-shaped but lumpy 3. Like a sausage but with cracks on its 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 7. Watery, no solid pieces, entirely liquid

Change From Baseline in Straining

Time frame · Baseline and 12-week

Change from baseline in Straining Score over the 12-week treatment period. Baseline was the mean of non-missing straining scores recorded during the 2-week baseline diary assessment period prior to the first dose of study drug. The severity of straining during a bowel movement was measured using an 11-point scale (0-10 rating; 0 = no straining; 10 = worst straining).

Change From Baseline in CSBM Frequency Rate

Time frame · Baseline and 12-Week

Change from baseline over the 12-week Treatment Period in CSBM (Complete Spontaneous Bowel Movement) Frequency Rate (CSBMs/Week). Baseline was the mean number of CSBMs recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.

Number of Patients With a SBM Within 24 Hours After the First Dose

Time frame · Up to 24 hours after first dose of study drug

Number of patients with a SBM (spontaneous bowel movement) within 24 hours after the first dose of study drug

Change From Baseline in Abdominal Pain

Time frame · Baseline and 12-Week

Change from baseline in abdominal pain as measured with an 11-point (0-10) Numerical Rating Scale from 0 (No) to 10 (Worst Possible). Baseline is the mean of non-missing abdominal pain scores recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.