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Table 3 PRISMA-P 2015 checklist: recommended items to include in a systematic review protocol a

From: Preferred reporting items for systematic review and meta-analysis protocols (PRISMA-P) 2015 statement

Section/topic Item # Checklist item
ADMINISTRATIVE INFORMATION
Title
  Identification 1a Identify the report as a protocol of a systematic review
  Update 1b If the protocol is for an update of a previous systematic review, identify as such
Registration 2 If registered, provide the name of the registry (e.g., PROSPERO) and registration number
Authors
  Contact 3a Provide name, institutional affiliation, and e-mail address of all protocol authors; provide physical mailing address of corresponding author
  Contributions 3b Describe contributions of protocol authors and identify the guarantor of the review
Amendments 4 If the protocol represents an amendment of a previously completed or published protocol, identify as such and list changes; otherwise, state plan for documenting important protocol amendments
Support
  Sources 5a Indicate sources of financial or other support for the review
  Sponsor 5b Provide name for the review funder and/or sponsor
  Role of sponsor/funder 5c Describe roles of funder(s), sponsor(s), and/or institution(s), if any, in developing the protocol
INTRODUCTION
Rationale 6 Describe the rationale for the review in the context of what is already known
Objectives 7 Provide an explicit statement of the question(s) the review will address with reference to participants, interventions, comparators, and outcomes (PICO)
METHODS
Eligibility criteria 8 Specify the study characteristics (e.g., PICO, study design, setting, time frame) and report characteristics (e.g., years considered, language, publication status) to be used as criteria for eligibility for the review
Information sources 9 Describe all intended information sources (e.g., electronic databases, contact with study authors, trial registers, or other grey literature sources) with planned dates of coverage
Search strategy 10 Present draft of search strategy to be used for at least one electronic database, including planned limits, such that it could be repeated
Study records
  Data management 11a Describe the mechanism(s) that will be used to manage records and data throughout the review
  Selection process 11b State the process that will be used for selecting studies (e.g., two independent reviewers) through each phase of the review (i.e., screening, eligibility, and inclusion in meta-analysis)
  Data collection process 11c Describe planned method of extracting data from reports (e.g., piloting forms, done independently, in duplicate), any processes for obtaining and confirming data from investigators
Data items 12 List and define all variables for which data will be sought (e.g., PICO items, funding sources), any pre-planned data assumptions and simplifications
Outcomes and prioritization 13 List and define all outcomes for which data will be sought, including prioritization of main and additional outcomes, with rationale
Risk of bias in individual studies 14 Describe anticipated methods for assessing risk of bias of individual studies, including whether this will be done at the outcome or study level, or both; state how this information will be used in data synthesis
Data
Synthesis 15a Describe criteria under which study data will be quantitatively synthesized
15b If data are appropriate for quantitative synthesis, describe planned summary measures, methods of handling data, and methods of combining data from studies, including any planned exploration of consistency (e.g., I2, Kendall’s tau)
15c Describe any proposed additional analyses (e.g., sensitivity or subgroup analyses, meta-regression)
15d If quantitative synthesis is not appropriate, describe the type of summary planned
Meta-bias(es) 16 Specify any planned assessment of meta-bias(es) (e.g., publication bias across studies, selective reporting within studies)
Confidence in cumulative evidence 17 Describe how the strength of the body of evidence will be assessed (e.g., GRADE)
  1. PRISMA-P Preferred Reporting Items for Systematic review and Meta-Analysis Protocols.
  2. aIt is strongly recommended that this checklist be read in conjunction with the PRISMA-P Explanation and Elaboration [30] for important clarification on the items. Amendments to a review protocol should be tracked and dated. The copyright for PRISMA-P (including checklist) is held by the PRISMA-P Group and is distributed under a Creative Commons Attribution License 4.0.