According to to the author, the vitamin D defficiency and insufficiency rate in the intervention was 20.7%, and this rate before the intervention was 38.9% and the before and after difference was 18.2% with p<0.05.
Theo tác giả tỷ lệ thiếu hụt Vitamin D ở NCT là 20,7%, sự khác biệt tỷ lệ trước can thiệp (38,9%) và sau can thiệp (18,2%) có ý nghĩa thống kê.