457 - Prospective Study Evaluating Predisposing Factors and Immune-Mediated Mechanisms Underlying Post-Infectious IBS

pain placebo response, defined as $ 30% pain improvement from baseline for $6 of the study weeks.Secondary analyses evaluated two additional definitions of placebo response: 1) Adequate Relief (AR) placebo response (reported AR for $6 out of the 12 study weeks); and 2) Complete Spontaneous Bowel Movement (CSBM) placebo response (an increase of $1 CSBM per week compared to baseline for $6 out of the 12 study weeks).Backwards