Bergen Open Research Archive

Remaining challenges in Tanzania’s efforts to eliminate iodine deficiency

Bergen Open Research Archive

Show simple item record Assey, Vincent Didas eng Mgoba, Celestin eng Mlingi, Nicholaus eng Sanga, Alfred eng Ndossi, Godwin D. eng Greiner, Ted eng Peterson, Stefan eng 2010-01-06T13:53:33Z 2010-01-06T13:53:33Z 2007 eng
dc.identifier.citation Public Health Nutrition 10(10): 1032-1038 en
dc.identifier.issn 1368-9800 eng
dc.description.abstract Objective: To determine iodine levels in salt and iodine deficiency prevalence in school-aged children in 16 districts in Tanzania with previous severe iodine deficiency. Design: A cross-sectional study in schoolchildren. Systematic probability sampling was used to select schools and subjects for goitre assessment and urinary iodine determination. Setting: Sixteen districts randomly selected from the 27 categorised as severely iodinedeficient in Tanzania. Subjects: The study population was primary-school children aged 6–18 years who were examined for goitre prevalence and urinary iodine concentration (UIC). Salt samples from schoolchildren’s homes and from shops were tested for iodine content. Results: The study revealed that 83.3% of households (n = 21 160) in the surveyed districts used iodised salt. Also, 94% of sampled shops (n = 397) sold iodised salt, with a median iodine level of 37.0 ppm (range 4.2–240 ppm). Median UIC in 2089 schoolchildren was 235.0 μg 1-¹ and 9.3% had UIC values below 50 μg 1-¹. The overall unweighted mean visible and total goitre prevalence was 6.7% and 24.3%, respectively (n = 16 222). The age group 6–12 years had the lowest goitre prevalence (3.6% visible and 18.0% total goitre, n = 7147). The total goitre prevalence had decreased significantly in all districts from an unweighted mean of 65.4% in the 1980s to 24.3% in 1999 (P < 0.05). We believe this difference was also biologically significant. Conclusion: These findings indicate that iodine deficiency is largely eliminated in the 16 districts categorised as severely iodine-deficient in Tanzania, and that the iodine content of salt purchased from shops is highly variable. en
dc.language.iso eng eng
dc.publisher Cambridge University Press en
dc.relation.ispartof <a href="" target="blank">Controlling iodine deficiency disorders through salt iodation in Tanzania</a>
dc.subject Goitre prevention and control eng
dc.subject Urinary iodine deficiency eng
dc.subject Iodised oil eng
dc.subject Iodised salt eng
dc.subject Tanzania eng
dc.title Remaining challenges in Tanzania’s efforts to eliminate iodine deficiency en
dc.type Journal article eng
dc.type Peer reviewed eng
dc.subject.nsi VDP::Medisinske Fag: 700 nob
dc.rightsHolder The Authors eng
dc.type.version Published version eng
bora.peerreviewed Peer reviewed eng
bibo.doi eng

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