1.
Prevalence of subclinical vitamin A deficiency and its affecting factors in 8 669 children of China.
Zhonghua Yu Fang Yi Xue Za Zhi
; 36(3): 161-3, 2002 May.
Artigo
em Inglês
| MEDLINE
| ID: mdl-12410947
RESUMO
OBJECTIVE: The survey will reveal current status of subclinical vitamin A deficiency (SVAD) and explore its affecting factors in children of China. METHODS: Totally 8 669 children aged under 6 years were randomly selected from 14 provinces for clinical examination, health and dietary questionnaire and serum level of vitamin A measurement with fluorescence method. The cut-off value for SVAD was defined as