Can you do a meta-analysis on observational studies?

Can you do a meta-analysis on observational studies?

Objective Meta-analyses of observational studies are frequently published in the literature, but they are generally considered suboptimal to those involving randomised controlled trials (RCTs) only.

How do you reference meta-analysis?

Place meta-analysis references in a separate list and submit that list as supplemental material, which will appear online but not with the print or online version of the article itself. If a meta-analysis reference is mentioned in the text, it should appear both in the reference list and in the supplemental material.

What is the Prisma method?

PRISMA stands for Preferred Reporting Items for Systematic Reviews and Meta-Analyses. It is an evidence-based minimum set of items for reporting in systematic reviews and meta-analyses. The PRISMA statement consists of a 27-item checklist and a 4-phase flow diagram.

How do you use PRISMA method?

Report the numbers of articles screened at each stage using a PRISMA diagram. Include information about included study characteristics, risk of bias (quality assessment) within studies, and results across studies. Summarize main findings, including the strength of evidence and limitations of the review.

How to systematically review and meta-analyse observational studies?

Systematic reviews and meta-analyses of observational studies are frequently performed, but no widely accepted guidance is available at present. We performed a systematic scoping review of published methodological recommendations on how to systematically review and meta-analyse observational studies.

How is a metaregression used in a prevalence analysis?

A metaregression will be conducted to identify sources of between-study heterogeneity in the pooled prevalence estimates. We will quantify heterogeneity using the I 2 measure and its CI. We will use funnel plots to detect potential reporting biases and small-study effects.

How many articles are eligible for a meta-analysis?

The searches identified 2461 articles of which 93 were eligible. Many recommendations for reviews and meta-analyses of observational studies were transferred from guidance developed for reviews and meta-analyses of RCTs.

What’s the difference between an RCT and an observational study?

Because observational studies differ in many aspects from RCTs, guidance aimed at reviews of RCTs should be applied with caution to observational studies [ 10, 11 ]. A previous methodological guideline published 18 years ago focused on how to report meta-analyses of observational studies rather than how to perform such studies [ 12 ].