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Meta-Analysis
. 2018 Mar 1;10(1):59-67.
doi: 10.4274/jcrpe.5043. Epub 2017 Sep 13.

A Meta-Analysis and an Evaluation of Trends in Obesity Prevalence among Children and Adolescents in Turkey: 1990 through 2015

Züleyha Alper  1 , İlker Ercan  2 , Yeşim Uncu  1
Affiliations
Meta-Analysis

A Meta-Analysis and an Evaluation of Trends in Obesity Prevalence among Children and Adolescents in Turkey: 1990 through 2015

Züleyha Alper et al. J Clin Res Pediatr Endocrinol. .

Abstract

Objective: Obesity in childhood and adolescence is one of the most serious public health problems due to a remarkable increase in prevalence in recent years and its close relationship with non-communicable diseases, such as diabetes and hypertension, resulting in increased adult morbidity and mortality. This study aims to quantify the secular trend in different regions of Turkey from 1990 to 2015 by performing a meta-analysis of childhood and adolescent obesity prevalence studies conducted.

Methods: Uludag University Library Database was searched for relevant articles published prior to March 2017. The heterogeneity of the studies in the meta-analysis was tested by the I2 statistic and Cochran's Q test. The obesity trend analyses were examined by chi-square trend analysis with respect to five year periods. The statistical significance level was taken as α=0.05.

Results: A total of 76 papers were initially identified addressing childhood and adolescent obesity in Turkey. Fifty-eight papers were selected for analysis. The prevalence of obesity increased from 0.6% to 7.3% with an 11.6-fold increase between the periods 1990-1995 to 2011-2015. The prevalence of obesity increased in both genders. However, boys were more likely to be obese than girls.

Conclusion: Studies on obesity prevalence in the 5-19 age group in Turkey have gained importance, especially in the 2000s. While a remarkable number of prevalence studies, mostly regional, have been conducted between 2005-2011, a gradual decline was observed thereafter. Further national and population-based surveys on prevalence of obesity in children and adolescents are definitely needed in Turkey.

Keywords: Childhood; adolescence obesity..

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Figures

Figure 1
Figure 1. Flow chart for selection of studies for inclusion in this trend and meta-analysis for obesity
Figure 2
Figure 2. Pooled analysis for obesity in children and adolescents in Turkey, overall, girls and boys respectively
Figure 3
Figure 3. Trends in obesity prevalence [OR (95% CI)] in Turkish children and adolescents aged 5-19 years from 1990-1995 through 2011-2015. Data obtained from all 58 publications with and without gender discrimination
Figure 4
Figure 4. Trends in obesity prevalence [OR (95% CI)] in Turkish children and adolescents aged 5-19 years from 1990-1995 through 2011-2015. Data obtained from 43 publications in which the data are given separately as overall. girls and boys
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