background: streptococcus pneumoniae is a major cause of childhood morbidity and mortality worldwide . several studies have explored the nasopharyngeal carriage of s. pneumonia in iran. this meta-analysis is aimed at exploring the overall prevalence of nasopharyngeal carriage of s. pneumoniae among healthy children and its resistance to antibiotics. method : we have systematically reviewed publ...

in this study, we aimed to conduct a meta-analysis on the results of eligible studies to estimate the prevalence of asthma, copd, and chronic bronchitis in iran. international and iranian databases including pubmed, scopus, web of science, iranmedex, and scientific information database (sid) were searched for population–based studies that had reported the prevalence of asthma and copd from 1990...

background and objective: febrile seizure is the most common convulsive disorder in children and different studies reported controversial results about the association between this disorder and iron deficiency, in some studies, iron level in children with febrile seizures is higher than control and in some reports is less than the control group. so, we systematically reviewed all the studies in...

background and aim: one of the most important subjects in the study of suicide is the methods used to it. there are not accurate statistics relating to employed physical methods for suicide in our country. studies conducted in different provinces provided different results. this study aimed to estimate the prevalence of physical methods used in attempted suicides in iran. materials and methods:...

background hepatitis e virus (hev) is one of common causes of viral hepatitis worldwide with higher prevalence in tropical and subtropical regions. although epidemics of hev have been reported from iran, there are variable reports of this infection out of epidemics from different parts of iran. this study aimed to determine the seroprevalence of hev in iran. methods in this systematic review an...

aim : in this study, we aimed to estimate one- to five-year survival rates in iranian patients with gastric cancer (gc). in addition, we preformed subgroup analyses and meta-regression to explore possible sources of heterogeneity between studies.   background : according to literatures, there has been increasing attention to the long-term survival rate in patients with gc in iran. however, resu...

Standard meta-analyses are an effective tool in evidence-based medicine, but one of their main drawbacks is that they can compare only two alternative treatments at a time. Moreover, if no trials exist which directly compare two interventions, it is not possible to estimate their relative efficacy. Multiple treatments meta-analyses use a meta-analytical technique that allows the incorporation o...

background: to investigate the relation between serum leptin levels and cerebral infarction (ci) by meta-analysis. materials and methods: scientific literature databases were searched for studies published in chinese and english. after retrieving relevant articles through database searches and screening using predefined selection criteria, high-quality studies related to our research topic were...

background :cytotoxic t lymphocyte-associated antigen-4 (ctla-4) is an important negative regulator of t-cell responses. the -1722tc polymorphism of the ctla-4 gene may be associated with systemic lupus erythematosus (sle) risk, but related results from previous studies have been inconsistent. we carried out a meta-analysis to assess this association more precisely.   methods : a systematic sea...

In an attempt to explain the lack of consensus that emerged from a review of the extant literature on the performance implications of cultural differences in mergers and acquisitions [M&A], meta-analyses were conducted for three categories of performance measures: stock market-based measures, accounting-based measures, and socio-cultural integration outcomes. As hypothesized, meta-analytic find...