Meta-Analysis
Copyright ©The Author(s) 2018. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastrointest Endosc. Dec 16, 2018; 10(12): 422-441
Published online Dec 16, 2018. doi: 10.4253/wjge.v10.i12.422
Sodium picosulphate or polyethylene glycol before elective colonoscopy in outpatients? A systematic review and meta-analysis
Rodrigo Silva de Paula Rocha, Igor Braga Ribeiro, Diogo Turiani Hourneaux de Moura, Wanderley Marques Bernardo, Maurício Kazuyoshi Minata, Flávio Hiroshi Ananias Morita, Júlio Cesar Martins Aquino, Elisa Ryoka Baba, Nelson Tomio Miyajima, Eduardo Guimarães Hourneaux de Moura
Rodrigo Silva de Paula Rocha, Igor Braga Ribeiro, Diogo Turiani Hourneaux de Moura, Wanderley Marques Bernardo, Maurício Kazuyoshi Minata, Flávio Hiroshi Ananias Morita, Júlio Cesar Martins Aquino, Elisa Ryoka Baba, Nelson Tomio Miyajima, Eduardo Guimarães Hourneaux de Moura, Gastrointestinal Endoscopy Unit, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo 05403-010, Brazil
Diogo Turiani Hourneaux de Moura, Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, United States
Author contributions: Rocha RSP acquisition of data, analysis, interpretation of data, drafting the article, revising the article, final approval; Bernardo WM analysis and interpretation of data, drafting the article, final approval; Ribeiro IB acquisition of data, drafting the article, revising the article, final approval; de Moura DTH analyzed and interpreted of data, revised the article; Minata MK acquisition of data, drafting the article, revising the article, Morita FHA acquisition of data, drafting the article, revising the article; Aquino JCM drafting the article, revising the article; de Moura EGH, Baba ER and Miyajima NT analysis and interpretation of data, drafting the article, revising the article, final approval; de Moura EGH: conception and design of the study, critical revision, final approval.
Conflict-of-interest statement: The authors deny any conflict of interest.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author to: Igor Braga Ribeiro, MD, Academic Fellow, Surgeon, Gastrointestinal Endoscopy Unit, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Av. Dr. Enéas de Carvalho Aguiar 255, Instituto Central, Prédio dos Ambulatórios, Pinheiros, São Paulo 05403-000, Brazil. igorbraga1@gmail.com
Telephone: +55-92-981377788 Fax: +55-11-26616467
Received: August 8, 2018
Peer-review started: August 9, 2018
First decision: October 4, 2018
Revised: October 17, 2018
Accepted: December 4, 2018
Article in press: December 5, 2018
Published online: December 16, 2018
Processing time: 135 Days and 8.6 Hours
Core Tip

Core tip: Previous meta-analyses did not consider patient status (if inpatient or outpatient) for inclusion in the studies and grouped different types of patients. They also failed to conduct analyses by subgroups (regimen schedule, volume of polyethylene glycol solution, dietary restriction) in order to elucidate confounding factors. This is the first systematic review and meta-analysis for this specific group of patients and the first to communicate effectiveness by NNT.