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. 2012 Apr 18;7(4):e34938. doi: 10.1371/journal.pone.0034938

Table 1. List of primary outcomes for the eight gastrointestinal diseases analyzed in this meta-analysis.

Disease Outcome
Antibiotic Associated Diarrhea (AAD), Traveller's Diarrhea (TD), and Infectious Diarrhea (ID) The primary outcome for AAD, TD, and ID is defined as diarrhea (3 loose stools/day for at least 2 days or 5 loose stools/48 h) within 2 months of antibiotic exposure.
Clostridium difficile Disease (CDD) The primary outcome of CDD is defined as a new episode of diarrhea associated with a positive culture or toxin (A or B) assay within 1 month exposure to antibiotics. The outcome of prevention of CDD is a new episode of C. difficle positive diarrhea within 1 month of a previous CDD episode.
Irritable Bowel Syndrome (IBS) The primary outcome measures was the improvement in overall symptoms as defined by the presence or absence of the following physical symptoms: pain, flatulence, bloating, anxiety, and quality of life or the change in symptom scores from baseline.
Helicobacter pylori (HPP) The primary outcome was the improvement of H. pylori eradication rates reducing side effects with probiotics.
Necrotizing Enterocolitis (NEC) The primary outcome of efficacy of probiotic supplementation in prevention of stage 2 or greater Necrotizing Enterocolitis, and safety in terms of blood culture-positive septis and any other adverse events reported by investigators.
Pouchitis (Pouch) The primary outcome of efficacy of probiotic supplementation was for the treatment of Pouchitis with no relapse.