Prevalence and causes of anaemia in children aged 6–23 months in rural Qinghai, China: findings from a cross-sectional study

Objective To investigate the current situation of anaemia among children aged 6–23 months in a rural county in China, and to explore the influencing factors and the main causes of anaemia. Design A cross-sectional study. Setting Huzhu County in Qinghai Province, China Participants We selected 38 sampled villages using Proportional to Population Size sampling method. We obtained the name list of children aged 6–23 months in each sampled village and planned to survey all the eligible children aged 6–23 months and their caregivers. Primary and secondary outcomes measures The prevalence of anaemia, the influencing factors of anaemia, the laboratory tests for biological causes of anaemia, including serum ferritin, soluble transferrin receptor, folic acid, homocysteine and vitamin B12. Results A total of 754 children aged 6–23 months and their caregivers were surveyed, and 183 anaemic children aged 12–23 months were collected venous blood sample. The anaemia prevalence of child...