Mortality, morbidity, and case-fatality rate due to pneumonia, meningitis and bacteremia, 1980–2008a,b,c.

aMortality and morbidity were expressed as 1/100,000/year; case-fatality rate was expressed as percentages.bThe mean score per question of all articles was ≥3.0.cthe Ministry of Health-defined geographic-economic strata, which was applied in the 4th national health survey in 2005 [47] was implemented.dn represents the number of articles.eNumbers presented are from the original publication.fCompared to Eastern and Western province, poisson regression, p