Search strategy and selection criteria
Preferred Reporting Items for Systematic Reviews and Meta-Analyses
guidelines (PRISMA) were followed for this network meta-analysis. A
systematic search of databases, including PubMed, Embase, Web of
Science, Ovid-EMBR, the Cochrane Library, and Chinese databases (CNKI,
Wanfang, and CMJD) was set from inception to August 31, 2022. We used
the following combined free-text and mesh terms: ”Renal Insufficiency,
Chronic” and ”hypoxia-inducible factor prolyl hydroxylase inhibitors”.
The entire search strategy was illustrated in Supplementary Material S1.
For additional relevant literature, ClinicalTrials.gov and references in
selected research and reviews were searched.