title: [Meta analysis of the nutrition intervention effect of Yingyangbao on infants and young children in China].
abstract: OBJECTIVE
  To systematically review the nutritional effect of YYB on infants and young children in poor rural regions.
  
  
  METHODS
  Medline, PubMed, Cochrane Library, CNKI and other sources of nutrition and health information were retrieved with the predetermined key words. The quality of the obtained literatures was evaluated with the criteria established in this study. RveMan 5.3 was used in the meta analysis.
  
  
  RESULTS
  Thirteen groups of qualified data from nine YYB intervention studies were used. The results showed that YYB significantly increased the level of Hb (MD = 0.94, 95% CI 0.94-1.15, P < 0.01), reduced the prevalence of anemia (RR = 0.34, 95% CI 0.25-0.46, P < 0.01). YYB showed no significant effect on WAZ and HAZ, but significant increase of WHZ was demonstrated by the analytical data (MD = 0.42, 95% CI 0.19-0.65, P < 0.01). Additionally YYB intervention groups also showed the prevalence of underweight (RR = 0.53, 95% CI 0.32-0.88, P < 0.05).
  
  
  CONCLUSIONS
  As an infant complementary food supplement, YYB improved the nutrition status of infants and young children including increased Hb level, declined anemia prevalence and wasting rate.
authors.forename: Qiannan
authors.initials: Q
authors.lastname: Zhang
authors.forename: Jing
authors.initials: J
authors.lastname: Sun
authors.forename: Xudong
authors.initials: X
authors.lastname: Jia
authors.forename: Junsheng
authors.initials: J
authors.lastname: Huo
mesh_terms: D000740:Anemia / Q000453:epidemiology / Q000517:prevention & control*; D002648:Child; D002681:China / Q000453:epidemiology; D019587:Dietary Supplements; D005527:Food, Fortified; D006801:Humans; D007223:Infant; D007225:Infant Food; D019266:Iron, Dietary / Q000008:administration & dosage*; D009752:Nutritional Status; D015995:Prevalence; D012424:Rural Population; D013851:Thinness
chemical_list: D019266:Iron, Dietary