Assessing a Stool Symptom Screener in Patients With Chronic Opioid-Induced Constipation

Inclusion Criteria: * Receiving a stable maintenance opioid regimen (total daily dose of 30-1000mg of oral morphine, or equianalgesic amounts of 1 or more other opioid therapies) for a minimum of 4 weeks for non-cancer related pain. * Development of constipation symptoms since starting opioids. * Taken laxatives to help with bowel movements for at least four days over the past 2 weeks. Exclusion Criteria: * Receiving opioid regimen for treatment of pain related to cancer. * Participated in any clinical trial or research study relating to opioid use and/or constipation within the past year. * History of cancer within 5 years from the time of screening. * Has medical condition(s) and/or treatment(s) associated with diarrhea, intermittent loose stools, or constipation (e.g., fecal incontinence or chronic idiopathic constipation). * Has irritable bowel syndrome (IBS) or chronic functional constipation.