title: [A survey on anemia among children under 7 years of age from 15 minority ethnic groups in Yunnan].
abstract: OBJECTIVE
  To investigate the level and distribution characteristics of anemia of the minority ethnic group children in Yunnan.
  
  
  METHODS
  The cases with anemia were surveyed from 13 336 samples of 15 minority ethnic groups and Han children in Yunnan by Taking the method of random cluster sampling.
  
  
  RESULTS
  The prevalence of anemia among the children under 7 years of age of 15 ethnic groups of minority in Yunnan was 13.6%. There are differences among the different ethnic groups (χ(2) = 716.33, P < 0.01), the highest was 26.6% in Jingpo, the lowest was 3.5% in Bai. There were differences among the different regions, the prevalence of anemia was high in the border regions City, the highest was 23.8% in Dehong; the prevalence of anemia was low in inland cities, the lowest was 2.7% in Fugong, and was higher in border areas. The prevalence of anemia was higher in boys (13.6%) than in girls (12.1%). There were differences among the different age in the different ethnic groups (6 months to 1 years old: χ(2) = 70.52, P < 0.01; 1 - 2 years old:χ(2) = 185.86, P < 0.01; 2 - 5 years old: χ(2) = 296.12, P < 0.01; 5 - 6 years old:χ(2) = 107.11, P < 0.01; 6 - 7 years old:χ(2) = 185.02, P < 0.01), the highest was 59.0% of Deang in 1 to 2 years old children. The trend of change was that the highest prevalence was seen in 6 months to 1 year old children, the prevalence gradually declined among older children, but rose again in children 6 years of age or older.
  
  
  CONCLUSIONS
  The prevalence of anemia was 13.6% among the children of 15 ethnic minority under 7 years of age in Yunnan. There were differences among different ethnic groups of minority in different prefectures. There were differences among different ethnic groups of different age groups, but it was highest in 6 months to 1 year old children, it declined among older children, and rose in children 6 years of age or older. The prevalence of anemia was related to the ethnic and geographic factors.
authors.affiliation: The Department of Laboratory Medicine, Yunnan Province Maternal and Child Health Hospital, Kunming, China.
authors.forename: Li-qin
authors.initials: LQ
authors.lastname: Yao
authors.forename: Tuan-biao
authors.initials: TB
authors.lastname: Zou
authors.forename: Jin-tao
authors.initials: JT
authors.lastname: Liu
authors.forename: Xing
authors.initials: X
authors.lastname: Quan
authors.forename: Qian
authors.initials: Q
authors.lastname: Chen
authors.forename: Fa-bin
authors.initials: FB
authors.lastname: Yang
authors.forename: Li-sha
authors.initials: LS
authors.lastname: Hu
authors.forename: Zhong-ming
authors.initials: ZM
authors.lastname: Zhao
authors.forename: Xing-tian
authors.initials: XT
authors.lastname: Wang
mesh_terms: D017677:Age Distribution; D000531:Altitude; D000740:Anemia / Q000175:diagnosis / Q000453:epidemiology* / Q000208:ethnology; D015415:Biomarkers / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology / Q000208:ethnology; D005006:Ethnicity; D005260:Female; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008913:Minority Groups / Q000706:statistics & numerical data*; D015995:Prevalence; D012494:Sampling Studies; D017678:Sex Distribution
chemical_list: D015415:Biomarkers; D006454:Hemoglobins