... thiu ht iode vựng nghiờn cu khi: - Iode niu 10 g iode/ 24 gi hay 10g iode/ g creatinine - Trờn 50% s mu cú hm lng iode niu 10g iode/ 24 gi hay 100 g iode/ g creatinine - S mu cú iode niu < 2g iode/ 24 ... (55,6%) 27 (100 ,0%) Bng 3 .8 T l hc sinh cú nng iode niu bỡnh thng theo tui v gii Iode niu tui Tng cng 10 - 20 Nam N 08 18 17 35 (31 ,8% ) 09 16 19 35 (31 ,8% ) 10 19 21 40 (36,4%) Tng cng 53 ( 48, 2%) 57 ... (51 ,8% ) 110( 100,0%) 34 Bng 3.9 T l hc sinh cú nng iode niu cao theo tui v gii Iode niu Tng cng >20 tui Nam N 08 13 10 23 (46,9%) 09 10 14( 28, 6%) 10 6 12 (24,5%) Tng cng 29 (59,2%) 20 (40 ,8% )...