2.1. Searching strategies

International databases (i.e. Pub Med, Web of Science, Google scholar and HINARI) were used to search published studies. Ethiopian university digital libraries also used to search unpublished studies. Studies published between September 20, 2005 and July 29, 2020 G.C were included in this systematic review and Meta -analysis. Searching terms used for Google scholar were "Prevalence", "magnitude", "proportion", "failed induction", "associated factors", "determinants","Ethiopia". Searching terms were established using the Boolean operator “and” and “or”. Search details for Pub Med were ("epidemiology" [Subheading] OR "epidemiology" [All Fields] OR "prevalence" [All Fields] OR "prevalence" [MeSH Terms] OR "magnitude" [All Fields]) AND failed [All Fields] AND induction [All Fields] AND associated [All Fields] AND factors [All Fields] AND ("Ethiopia" [MeSH Terms] OR "Ethiopia" [All Fields])