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The Effect of the Yingyangbao Complementary Food Supplement on the Nutritional Status of Infants and Children: A Systematic Review and Meta-Analysis

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Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
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Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
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Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
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Research Center for Public Health, School of Medicine, Tsinghua University, Beijing 100084, China
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Department of Global Health, School of Public Health, Peking University, Beijing 100191, China
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Authors to whom correspondence should be addressed.
Nutrients 2019, 11(10), 2404; https://doi.org/10.3390/nu11102404
Received: 9 July 2019 / Revised: 6 September 2019 / Accepted: 23 September 2019 / Published: 8 October 2019
Yingyangbao (YYB) is a nutrient-dense complementary food supplement for infants and young children in China. There has been considerable interest and research on the potential effects of YYB on hematological and anthropometric outcomes in China, but limited effort has been made to consolidate and synthesize the evidence to inform the research and policy agendas. Eight English databases and three Chinese databases were searched from January 2001 to June 2019 to identify YYB intervention studies. A total of 32 quasi-experimental, post-only, concurrent-control studies or pre-post studies were identified, and 26 were included in the meta-analyses. A pooled analysis of post-only studies with concurrent-control determined that YYB was associated with an increase of 4.43 g/L (95% confidence interval (CI) 1.55, 7.30) hemoglobin concentration, 2.46 cm (CI 0.96, 3.97) in height, and 0.79 kg (CI 0.25, 1.32) weight in infants and young children. YYB was also associated with reductions in the prevalence of anemia (risk ratio (RR) = 0.55; 95% CI: 0.45, 0.67), stunting (RR = 0.60; 95% CI: 0.44, 0.81), and underweight (RR = 0.51; 95% CI: 0.39, 0.65). Overall, YYB was found to be associated with improved hematological and anthropometric indicators among infants and young children in China; however, randomized trials are needed to causally assess the efficacy of YYB due to the inherent risk of bias in existing quasi-experimental studies; rigorous implementation and cost-effectiveness evaluations are also needed. View Full-Text
Keywords: Yingyangbao; food supplement; infant and children; hematological status; anthropometric status Yingyangbao; food supplement; infant and children; hematological status; anthropometric status
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Li, Z.; Li, X.; Sudfeld, C.R.; Liu, Y.; Tang, K.; Huang, Y.; Fawzi, W. The Effect of the Yingyangbao Complementary Food Supplement on the Nutritional Status of Infants and Children: A Systematic Review and Meta-Analysis. Nutrients 2019, 11, 2404.

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