sible to spend 2 hours (or examining the video until the capsule reaches the bowel) with the patient in the RLP before discharge. Hu et al also suggest that patients in the control group might have been asked to remain in the upright position. Actually, all these patients were upright after swallowing the capsule because they were outpatients. Per our discussion ‘‘to homogenize the sample, only outpatients were included in this study. This factor could represent a bias, but inpatients are frequently in poor health, and the transit times are usually increased and difficult to assess.’’ This also addresses the third criticism of Hu et al.