alexa Age- and region-specific hepatitis B prevalence in Turkey estimated using generalized linear mixed models: a systematic review.
Infectious Diseases

Infectious Diseases

Journal of Infectious Diseases & Preventive Medicine

Author(s): Toy M, nder FO, Wrmann T, Bozdayi AM, Schalm SW,

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Abstract BACKGROUND: To provide a clear picture of the current hepatitis B situation, the authors performed a systematic review to estimate the age- and region-specific prevalence of chronic hepatitis B (CHB) in Turkey. METHODS: A total of 339 studies with original data on the prevalence of hepatitis B surface antigen (HBsAg) in Turkey and published between 1999 and 2009 were identified through a search of electronic databases, by reviewing citations, and by writing to authors. After a critical assessment, the authors included 129 studies, divided into categories: 'age-specific'; 'region-specific'; and 'specific population group'. To account for the differences among the studies, a generalized linear mixed model was used to estimate the overall prevalence across all age groups and regions. For specific population groups, the authors calculated the weighted mean prevalence. RESULTS: The estimated overall population prevalence was 4.57, 95\% confidence interval (CI): 3.58, 5.76, and the estimated total number of CHB cases was about 3.3 million. The outcomes of the age-specific groups varied from 2.84, (95\% CI: 2.60, 3.10) for the 0-14-year olds to 6.36 (95\% CI: 5.83, 6.90) in the 25-34-year-old group. CONCLUSION: There are large age-group and regional differences in CHB prevalence in Turkey, where CHB remains a serious health problem.
This article was published in BMC Infect Dis and referenced in Journal of Infectious Diseases & Preventive Medicine

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