Page History

• Addition of new studies (e.g. the full inclusion of a study previously awaiting classification)
• Removal of one or more studies previously included (e.g. when the studies have been retracted)
• Any changes to the following sections (except minor typographical errors that do not impact the data or review findings or interpretation): scope of the review (e.g. new outcomes, comparisons, types of participants or developments in the intervention or its delivery); methodology; results (e.g. in effect estimates or confidence intervals), the certainty in the results (as expressed by GRADE ratings); conclusions; Summary of Findings tables; Abstract; and/or Plain Language Summary
• Where review is changed in response to a Comment/Feedback (beyond minor typographical changes) 

Y

Y

(1) Updated* OR amended

AND

(2) New citation: conclusions changed

• Minor typographical errors that do not impact the data or review findings or interpretation
• One or more studies removed from ‘Studies awaiting classification’
• New search performed, but studies not fully incorporated into the results of the review (i.e. added to ‘Studies awaiting classification’)**
• Addition of a comment and/or a reply to the feedback section but with no other changes to the review (apart from minor typographical errors)
• Republishing a withdrawn review to add new information to the withdrawal notice (e.g. to indicate that the review has been superseded by a different review)

N

N

(1) Amended

• Addition of new studies (e.g. the full inclusion of a study previously awaiting classification)
• Removal of a study previously included (e.g. when the studies have been retracted)
• Any changes to the following sections (except minor typographical errors that do not impact the data or review findings or interpretation): scope of the review (e.g. new outcomes, comparisons, types of participants or developments in the intervention or its delivery); methodology; results (e.g. in effect estimates or confidence intervals), the certainty in the results (as expressed by GRADE ratings); conclusions; Summary of Findings tables; Abstract; and/or Plain Language Summary
• Where review is changed in response to a Comment/Feedback (beyond minor typographical errors) 
• Where one or more of the studies has a published expression of concern, and a note of caution is added to the published review, pending further information
• Post-publication change in authorship (see Changes in authorship)
• Incorrect author affiliation published

N

Y

(1) Updated* OR amended

AND

(2) New citation: conclusions not changed

• An important change to the objectives or scope of the proposed review (e.g. new outcomes or changes to the priority or definition of the outcomes, comparisons, methodology, types of participants or developments in the intervention or its delivery)

Major change

Y

(1) New citation: major change

• Minor typographical errors 
• Changes to information presented in the background section that will not otherwise affect the eligibility criteria (e.g. amending definition or burden of disease, or updating supporting references)
• Addition of a Comment and/or a response to the feedback section but with no further changes to the protocol (apart from minor typographical changes)
• Republishing a withdrawn protocol to add new information to the withdrawal notice (e.g. to indicate that the protocol has been superseded by a different review or protocol)

Amended

N

(1) Amended

• Where protocol is changed in response to a Comment/Feedback
• Post-publication change in authorship (see Changes in authorship)

Amended

Y

(1) New citation: no major change