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Few studies have estimated dietary FeBio in children at a national level in relation to sociodemographic characteristics. This study aimed to estimate FeBio intake and its association with sociodemographic factors among Mexican children aged 12\u201359\u2009months.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>A cross-sectional study was carried out. Information on serum ferritin and diet was obtained from a national survey and representative sample of 1012 Mexican children aged 12\u201359\u2009months. We used a 24-h recall to estimate total iron, heme and non-heme iron, vitamin C, phytates, calcium, and meat intake. We calculated FeBio intake using an algorithm. Differences in FeBio intake were analyzed by area of residence (rural\/urban), country region (north, center, south), and socioeconomic status (SES), using linear regression models by age subgroups (12\u201323 and 24\u201359\u2009months) and total population, while adjusting for study design.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>Total iron intake was 9.2\u2009\u00b1\u20096.7\u2009mg\/d. The estimated average of total FeBio fluctuated between 0.74\u20130.81\u2009mg\/d, with a bioavailability of 9.15\u201312.03% of total iron. Children aged 12\u201323\u2009months residing in rural areas consumed less FeBio than those in urban areas (\u03b2\u2009=\u2009\u2212\u20090.276) (<jats:italic>p<\/jats:italic>\u00a0&lt;\u20090.05). Children aged 24\u201359\u2009months with high SES consumed more FeBio (\u03b2\u2009=\u20090.158\u2009mg\/d) than those of a low SES (<jats:italic>p<\/jats:italic>\u00a0&lt;\u20090.05).<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>FeBio is low in Mexican preschoolers. Being from a rural area and having low SES were negatively associated with FeBio intake. These results can benefit interventions seeking to improve iron status.<\/jats:p>\n<\/jats:sec>","DOI":"10.1186\/s12937-020-00567-3","type":"journal-article","created":{"date-parts":[[2020,6,20]],"date-time":"2020-06-20T18:03:28Z","timestamp":1592676208000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Sociodemographic factors associated with low intake of bioavailable iron in preschoolers: National Health and Nutrition Survey 2012, Mexico"],"prefix":"10.1186","volume":"19","author":[{"given":"Yazm\u00edn","family":"Venegas-Aviles","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5439-4389","authenticated-orcid":false,"given":"Sonia","family":"Rodr\u00edguez-Ram\u00edrez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Monterrubio-Flores","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Armando","family":"Garc\u00eda-Guerra","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,6,20]]},"reference":[{"key":"567_CR1","volume-title":"The global prevalence of anaemia in 2011","author":"WHO","year":"2015","unstructured":"WHO. 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