Post-acute sequelae of COVID-19 and adverse psychiatric outcomes: an etiology and risk systematic review protocol

Introduction

The post-acute sequelae of COVID-19 (PASC) is a syndrome characterized by persistent COVID-19 symptoms or the onset of new symptoms following recovery from the initial or acute phase of the illness. Such symptoms often occur four or more weeks after being diagnosed with COVID-19. Although a lot of work has gone into understanding the long-term mental health effects of PASC, many questions related to the etiology and risk of this condition remain. Thus, this protocol is for a systematic review assessing the association between PASC and adverse psychiatric outcomes and whether people with PASC are at greater risk of developing an adverse psychiatric outcome than those without PASC.

Methods and analysis

Various medical databases (e.g., PubMed and EMBASE) will be searched for eligible articles using predefined search criteria. Gray literature will also be explored. Epidemiological observational studies and secondary analyses of randomized controlled trials that report a quantitative relationship between PASC and at least one adverse psychiatric outcome will be included. The Population, Exposure of interest, Comparator, and Outcome (PECO) framework will be used as a standardized framework for the inclusion criteria. The Joanna Briggs Institute (JBI) critical appraisal tools will be used to assess methodological quality and critically appraise the risk of bias in included studies. A random-effects meta-analysis will be conducted if possible. A formal narrative synthesis will be performed if a meta-analysis is impossible due to substantial heterogeneity across studies. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach will be used to rate the cumulative certainty of the evidence for all outcomes.

Ethics and Dissemination

Ethical approval is not required for this study. The study results will be published in a peer-reviewed journal.

Prospero registration number

CRD42022308737

Strengths and limitations of this study

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  This study documents and addresses etiology, risk factors, and long-term symptoms of COVID-19 among people with post-acute sequelae of COVID-19 (PASC).

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  It focuses on a key priority area for new evidence syntheses on the clinical management of COVID-19 and pandemic-related conditions.

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  It will include evidence on non-hospitalized and hospitalized patients with a history of PASC.

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  Substantial heterogeneity across studies may limit the ability to perform a meta-analysis.

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  Findings will inform disease prevention, decision-making, healthcare policy, and clinical research.