1,027
Participants
Start Date
January 20, 2018
Primary Completion Date
July 1, 2019
Study Completion Date
July 6, 2019
9-minute withdrawal
Patients in 9-minute withdrawal group will be carefully observed for 9 minutes during the colonoscopy withdraw
6-minute withdrawal
Patients in 6-minute withdrawal group will be carefully observed for 6 minutes during the colonoscopy withdraw
Changhai Hospital, Second Military Medical University, Shanghai
No.85 Hospital, Changning, Shanghai, China
OTHER
The Second Clinical Medical College of Jinan University
OTHER
Qinghai People's Hospital
OTHER
Shaanxi Provincial People's Hospital
OTHER
Shanghai 8th People's Hospital
OTHER
Yantaishan Hospital of Yantai City
UNKNOWN
First Affiliated Hospital of Harbin Medical University
OTHER
Changzhi People's Hospital
OTHER
Ningbo Medical Center Li Huili Eastern Hospital
UNKNOWN
The Third People's Hospital of Datong
UNKNOWN
The First Affiliated Hospital of the Medical College, Shihezi University
UNKNOWN
The First Affiliated Hospital of Dalian Medical University
OTHER
Seventh Medical Center of PLA Army General Hospital
OTHER
Changhai Hospital
OTHER