Dietary diversity score and obesity: a systematic review and meta-analysis of observational studies

A Salehi-Abargouei, F Akbari, N Bellissimo… - European journal of …, 2016 - nature.com
European journal of clinical nutrition, 2016nature.com
Methods: PubMed, ISI Web of Science, Scopus and Google Scholar were searched through
December 2013 to identify all relevant articles. Sixteen publications met the inclusion criteria
for the systematic review and 10 articles were entered into the meta-analysis. Eight studies
had data on the odds ratio (OR) for overweight/obesity and eight compared the mean body
mass index (BMI) among subjects with highest versus the lowest DDS. Results: A meta-
analysis on eligible studies failed to show a significant association on either …
Methods:
PubMed, ISI Web of Science, Scopus and Google Scholar were searched through December 2013 to identify all relevant articles. Sixteen publications met the inclusion criteria for the systematic review and 10 articles were entered into the meta-analysis. Eight studies had data on the odds ratio (OR) for overweight/obesity and eight compared the mean body mass index (BMI) among subjects with highest versus the lowest DDS.
Results:
A meta-analysis on eligible studies failed to show a significant association on either overweight/obesity OR (OR: 0.72; 95% confidence interval (CI): 0.45–1.16; P= 0.174) or mean differences (MD) in BMI (MD: 0.22; 95% CI:− 0.70–1.14; P= 0.643) comparing the highest and lowest diverse diets. Between-study heterogeneity was high, and subgroup analysis failed to identify the source of heterogeneity.
Conclusions:
Our systematic review and meta-analysis showed that there was no significant association between DDS and BMI status, which may be due to use of different methods for assessing dietary intake and determination of DDS. Thus, well-designed prospective studies with similar approaches to assess DDS are highly recommended.
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