The results showed that the prevalence of sub-clinical vitamin A deficiency (Sub - VAD) was 9.7%; the prevalence of Sub-VAD risk was 37.2%. The mean of retinol concentration was 1.11±0.3 mol / L.
Kết quả cho thấy, tỷ lệ thiếu vitamin A tiền lâm sàng (VAD-TLS) là 9,7%; tỷ lệ nguy cơ VAD-TLS là 37,2%; nồng độ retinol trung bình (TB) là 1,11 ± 0,3 mol / L.