Systematic reviews and meta-analyses rank at the apex of the evidence-based hierarchy. Adhering to the updated PRISMA 2020 statement ensures methodological transparency and dramatically boosts citation metrics.
1. Structuring Search Strategies Across Multiple Databases
A rigorous systematic review queries at least three comprehensive databases (e.g., PubMed, Scopus, Web of Science, Embase). Use Boolean operators, MeSH terms, and wildcards strategically. Retain full unedited search strings for supplementary documentation.
2. Study Screening and Inter-Rater Reliability
Utilize dual independent screening at both the title/abstract and full-text stages. Calculate Cohen's Kappa (κ) or percentage agreement to demonstrate methodological rigor before consensus resolution.
3. Risk of Bias Assessment Tools
Adopt domain-standard quality assessment tools tailored to study design:
- RoB 2 (Cochrane): For randomized controlled trials.
- ROBINS-I: For non-randomized interventional studies.
- Newcastle-Ottawa Scale (NOS): For observational and cohort studies.
