Most patients did not watch online video instructions for colonoscopy bowel preparation, according to Boston Medical Center researchers who said they were surprised that only 24 of 387 people given a link to the resource actually watched it. They also found there was no difference in bowel cleanliness among patients who watched the video and those who were given usual instructions. In an accompanying note, Dr. Grace Lin wrote: "Although Web-based tools are an important avenue for patient education, this study highlights that even well-designed tools will not be effective if they are not used."

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