Improving Effect of Reinforced Family Assistance on the Quality of Bowel Preparation for Colonoscopy

Enhanced instructions such as re-education by telephone or short message which increase the patient adherence eventually improve the quality of bowel preparation significantly. However, the effect of family assistance which plays an essential role on compliance of patient with treatment on bowel preparation is unknown. The investigators hypothesized that reinforced education giving family members of outpatients will enhance family support to patients for colonoscopy, and consequently improve the quality of bowel preparation. Therefore, the investigators designed protocols to reinforce family member education by verbal (face to face or telephone) and written methods. The aim of this study is to evaluate the effect of reinforced family member education on patient compliance and the quality of bowel preparation for colonoscopy. In addition，the rate of side effects happening, the subjective feelings of bowel preparation, the outcomes of colonoscopy ,and the independent risk factors will be also assessed.