In a landmark trial in an area of severe iodine
deficiency in Papua New Guinea,10,11 alternate families
received saline (control) or iodised oil injection. The
primary outcome was the prevalence of cretinism
at 4 and 10 years follow-up, with more sensitive diagnostic
tests applied at the 10-year follow-up. Iodine
supplementation was associated with a significant
reduction in the prevalence of endemic cretinism: at
4 years of age, the relative risk [95% CI] was 0.27 [0.12,
0.60] and at 10 years of age, the relative risk [95% CI]
was 0.17 [0.05, 0.58]. A long-term follow-up was done
on a small sample of non-cretinous children at 11 and
15 years of age,12 but found no significant differences
in motor and cognitive function between the children
born to supplemented families and controls.
In a landmark trial in an area of severe iodinedeficiency in Papua New Guinea,10,11 alternate familiesreceived saline (control) or iodised oil injection. Theprimary outcome was the prevalence of cretinismat 4 and 10 years follow-up, with more sensitive diagnostictests applied at the 10-year follow-up. Iodinesupplementation was associated with a significantreduction in the prevalence of endemic cretinism: at4 years of age, the relative risk [95% CI] was 0.27 [0.12,0.60] and at 10 years of age, the relative risk [95% CI]was 0.17 [0.05, 0.58]. A long-term follow-up was doneon a small sample of non-cretinous children at 11 and15 years of age,12 but found no significant differencesin motor and cognitive function between the childrenborn to supplemented families and controls.
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