Poor subjective sleep quality predicts symptoms in Irritable Bowel Syndrome using the Experience Sampling Method.

Poor subjective sleep quality was associated with higher next day lower GI symptom levels, but not vice versa. Objective sleep measures did not predict next day abdominal symptoms, potentially supporting the conclusion that it is the perception of sleep quality which is most influential. This study may be used to guide future research into the effect of sleep interventions on GI symptoms.