Background
The existing epidemiological data cannot represent the situation of malnutrition among Chinese children, particularly those in rural China. Hence, in this community-based cross-sectional study, the prevalence and associated factors of stunting, underweight and wasting among children (age < 6 years) from rural Hunan Province were analyzed.
Methods
Totally 5529 children aged 0 to 71 months and their caregivers were randomly chosen by multistage stratified cluster sampling from 72 villages from rural Hunan, which covered 24 towns in 12 counties. Data about the children and their mothers, caregivers and family conditions was acquired using unified questionnaire, and the length/height and weight of each child were measured using unified instruments. The prevalence of malnutrition among children were evaluated using the length/height for age, weight for age, weight for length/height, and body mass index for age z scores, which were computed according to the 2006 and 2007 WHO Child Growth Standards.
Results
The prevalence of stunting, underweight, and wasting among the 5529 children are 4.4% (241), 3.9% (217), and 4.0% (221), respectively. The significant associated factors on higher risks of malnutrition in the children are low birth weight, maternal gestational weight gain < 10 kg (stunting); low birth weight, maternal gestational weight gain < 10 kg, ethnicity of caregivers being minority (underweight); low birth weight, ethnicity of caregivers being minority (wasting). High education level of caregivers and high family food expenditure are common protective factors for all three types of malnutrition, except that high family food expenditure is not protective for wasting.
Conclusions
The prevalence of stunting, underweight and wasting is low among rural children under age of 6 years in Hunan. As for the measures, the gestational care and reasonable diet of mothers should be strengthened, and nutritional deficiency during pregnancy be avoided, which will prevent low birth weight. Education about nutrition must be promoted among minorities.