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Standardized Map of...
Standardized Map of Iodine Status in Europe
- Article/chapterEnglish2020
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Mary Ann Liebert Inc,2020
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LIBRIS-ID:oai:gup.ub.gu.se/295489
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https://gup.ub.gu.se/publication/295489URI
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https://doi.org/10.1089/thy.2019.0353DOI
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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Background:Knowledge about the population's iodine status is important, because it allows adjustment of iodine supply and prevention of iodine deficiency. The validity and comparability of iodine-related population studies can be improved by standardization, which was one of the goals of the EUthyroid project. The aim of this study was to establish the first standardized map of iodine status in Europe by using standardized urinary iodine concentration (UIC) data. Materials and Methods:We established a gold-standard laboratory in Helsinki measuring UIC by inductively coupled plasma mass spectrometry. A total of 40 studies from 23 European countries provided 75 urine samples covering the whole range of concentrations. Conversion formulas for UIC derived from the gold-standard values were established by linear regression models and were used to postharmonize the studies by standardizing the UIC data of the individual studies. Results:In comparison with the EUthyroid gold-standard, mean UIC measurements were higher in 11 laboratories and lower in 10 laboratories. The mean differences ranged from -36.6% to 49.5%. Of the 40 postharmonized studies providing data for the standardization, 16 were conducted in schoolchildren, 13 in adults, and 11 in pregnant women. Median standardized UIC was <100 mu g/L in 1 out of 16 (6.3%) studies in schoolchildren, while in adults 7 out of 13 (53.8%) studies had a median standardized UIC <100 mu g/L. Seven out of 11 (63.6%) studies in pregnant women revealed a median UIC Conclusions:We demonstrate that iodine deficiency is still present in Europe, using standardized data from a large number of studies. Adults and pregnant women, particularly, are at risk for iodine deficiency, which calls for action. For instance, a more uniform European legislation on iodine fortification is warranted to ensure that noniodized salt is replaced by iodized salt more often. In addition, further efforts should be put on harmonizing iodine-related studies and iodine measurements to improve the validity and comparability of results.
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Albrecht, D.
(author)
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Arohonka, P.
(author)
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Bilek, R.
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de Castro, J. J.
(author)
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Dahl, L.
(author)
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Nyström, Helena Filipsson,1966Gothenburg University,Göteborgs universitet,Institutionen för medicin,Institute of Medicine(Swepub:gu)xfilih
(author)
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Gaberscek, S.
(author)
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Garcia-Fuentes, E.
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Gheorghiu, M. L.
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Hubalewska-Dydejczyk, A.
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Hunziker, S.
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Jukic, T.
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Karanfilski, B.
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Koskinen, S.
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Kusic, Z.
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Majstorov, V.
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Makris, K. C.
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Markou, K. B.
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Meisinger, C.
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Kostova, N. M.
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Mullen, K. R.
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Nagy, E. V.
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Pirags, V.
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Rojo-Martinez, G.
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Samardzic, M.
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Saranac, L.
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Strele, I.
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Thamm, M.
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Top, I.
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Trofimiuk-Muldner, M.
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Unal, B.
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Koskinen, S.
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Vila, L.
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Vitti, P.
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Winter, B.
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Woodside, J. V.
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Zaletel, K.
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Zamrazil, V.
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Zimmermann, M.
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Erlund, I.
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Volzke, H.
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Göteborgs universitetInstitutionen för medicin
(creator_code:org_t)
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In:Thyroid: Mary Ann Liebert Inc30:91050-72561557-9077
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Ittermann, T.
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Albrecht, D.
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Arohonka, P.
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Bilek, R.
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de Castro, J. J.
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Dahl, L.
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Nyström, Helena ...
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Gaberscek, S.
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Garcia-Fuentes, ...
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Gheorghiu, M. L.
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Hubalewska-Dydej ...
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Hunziker, S.
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Jukic, T.
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Karanfilski, B.
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Koskinen, S.
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Kusic, Z.
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Majstorov, V.
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Makris, K. C.
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Markou, K. B.
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Meisinger, C.
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Kostova, N. M.
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Mullen, K. R.
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Nagy, E. V.
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Pirags, V.
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Rojo-Martinez, G ...
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Samardzic, M.
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Saranac, L.
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Strele, I.
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Thamm, M.
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Top, I.
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Trofimiuk-Muldne ...
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Unal, B.
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Vila, L.
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Vitti, P.
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Winter, B.
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Woodside, J. V.
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Zaletel, K.
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Zamrazil, V.
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Zimmermann, M.
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Erlund, I.
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Volzke, H.
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