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Bowel preparation is closely lined to the quality of colonoscopy, inadequate bowel preparation (IBP) could lead to higher miss rate of adenomas, patients' discomfort and higher health expense. For the patients with possible IBP before the examination, it may be better to cancel the colonoscopy and repeat bowel preparation through modified or enhanced strategies. This study aimed to externally validate the efficiency of a procedure-based model in predicting inadequate bowel preparation
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Questionnaire | Other | Before colonoscopy, the following information was obtained by the colonoscopists through asking patients: the characteristics of last stool, the time of drinking first dose of laxative, the time of first defecation, the time of drinking last dose of laxative. The beginning time of colonoscopy was also recorded. During withdrawal phase, the quality of bowel preparation was evaluated based on BBPS scale. |
| Measure | Description | Time Frame |
|---|---|---|
| Adequate bowel preparation | Defined by each segmental BBPS≥2 | 1 hour |
| Measure | Description | Time Frame |
|---|---|---|
| The rate of yellow, clear stool in the last defecation | The characteristics of the last stool was self-evaluated by patients based on a picture containing different kind of stool examples. | 1 hour |
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Inclusion Criteria:
Exclusion Criteria:
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This is a prospective study involving eleven tertiary-centers in China.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Gastroenterology, Hongai Hospital | Xiamen | Fujian | 361000 | China | ||
| Xiang'an hospital of Xiamen University |
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| ID | Term |
|---|---|
| D011795 | Surveys and Questionnaires |
| ID | Term |
|---|---|
| D003625 | Data Collection |
| D004812 | Epidemiologic Methods |
| D008919 | Investigative Techniques |
| D017531 | Health Care Evaluation Mechanisms |
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| Xiamen |
| Fujian |
| China |
| Department of Gastroenterology, Qionghai people's hospital | Qionghai | Hainan | China |
| Department of Gastroenterology, Bethune international peace hospital | Shijiazhuang | Hebei | China |
| Department of Gastroenterology，Zhengzhou Central Hospital | Zhengzhou | Henan | China |
| Department of Gastroenterology, Shaanxi Second People's Hospital | Xi'an | Shaanxi | 710005 | China |
| Endoscopic center, Xijing Hospital of Digestive Diseases | Xi'an | Shaanxi | 710032 | China |
| The Second Affiliated Hospital of Xi'an Jiaotong University | Xi'an | Shaanxi | China |
| The First Affiliated Hospital of Xi'an Medical University | Xi'an | Shannxi | China |
| Department of Gastroenterology，Shanxi Bethune hospital | Taiyuan | Shanxi | China |
| Department of Gastroenterology，Chengdu third people's hospital | Chengdu | Sichuang | China |
| Department of Gastroenterology, The First Affiliated Hospital of the Medical College, Shihezi University | Shihezi | Xinjiang | 832008 | China |
| D011787 | Quality of Health Care |
| D017530 | Health Care Quality, Access, and Evaluation |
| D011634 | Public Health |
| D004778 | Environment and Public Health |