2.1 Searching Process
The databases PubMed, Medline and Google were searched using medical subject heading (MeSH) to screen and filter articles of interest on hospital and population based studies on prevalence and risk factors of CKD in Nigeria with emphasis on studies in rural and semi-urban communities Southeast Nigeria. The MeSH terms were internally validated by the coauthors. Articles in the review needed to be published (1) December 2018 and after January 1985(2). Available as full text in English (3) categorized as original research, reviews and metal-analysis. Titles and abstracts were reviewed to verify these criteria.