{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T07:49:39Z","timestamp":1753861779032,"version":"3.41.2"},"reference-count":43,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,3,31]],"date-time":"2025-03-31T00:00:00Z","timestamp":1743379200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["American J Hum Biol"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To generate hematocrit percentile charts for schoolchildren aged 6\u201318\u2009years and determine the prevalence of anemia by socioeconomic status class in southern Brazil.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This is a cross\u2010sectional study utilizing data collected between 2014 and 2017 from southern Brazil. The study's sample consists of 4802 schoolchildren, aged 6 to 18\u2009years. The percentile charts for sex\u2010specific hematocrit were developed using the LMS (Lambda\u2010Mu\u2010Sigma) method. The simplified economic classification, based on ABEP criteria, was used to group individuals into A\u2009+\u2009B (high), C (middle), and D\u2009+\u2009E (low) income classes. Anemia was defined as hematocrit z\u2010score\u2009\u2264\u2009\u22121.96 for age and sex.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among boys, 58 (2.86%) were anemic, 1955 (94.81%) had normal hematocrit levels, and 48 (2.33%) had high hematocrit. Girls showed a similar pattern, with 73 (2.73%) anemic, 2534 (94.90%) with normal hematocrit, and 63 (2.36%) with high hematocrit. For girls, a higher prevalence of non\u2010anemic hematocrit was observed in class A (39.33%) compared to anemic children (23.28%), with significant standardized residuals. For boys, significant residuals were observed for a higher prevalence of anemic children in the lower socioeconomic class DE (13.79%) compared to non\u2010anemic children (5.18%), and a higher prevalence of non\u2010anemic children in the upper socioeconomic class A (42.63%) compared to anemic children (22.41%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The percentile charts generated from hematocrit levels enabled the comparison of anemia prevalence across socioeconomic status classes. A higher prevalence of anemia was found among boys in lower socioeconomic classes, while girls in higher socioeconomic classes showed a lower prevalence of anemia.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ajhb.70034","type":"journal-article","created":{"date-parts":[[2025,4,2]],"date-time":"2025-04-02T02:01:24Z","timestamp":1743559284000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Detection of Anemia in Schoolchildren Aged 6\u201318\u2009Years With Hematocrit Percentile Charts and the Impact of Economic Status in Southern Brazil"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0100-185X","authenticated-orcid":false,"given":"Vanessa Regina","family":"Jung","sequence":"first","affiliation":[{"name":"Postgraduate Program in Health Promotion University of Santa Cruz Do Sul  Santa Cruz do Sul Rio Grande do Sul Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4301-5187","authenticated-orcid":false,"given":"Nikolas Mateus Pereira","family":"de Souza","sequence":"additional","affiliation":[{"name":"Department of Life Sciences University of Santa Cruz Do Sul  Santa Cruz do Sul Rio Grande do Sul Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dhuli Kimberli Abeg","family":"da Rosa","sequence":"additional","affiliation":[{"name":"Bioprocess Engineering and Biotechnology State University of Rio Grande Do Sul  Santa Cruz do Sul Rio Grande do Sul Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jo\u00e3o Francisco","family":"de Castro Silveira","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Health Promotion University of Santa Cruz Do Sul  Santa Cruz do Sul Rio Grande do Sul Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C\u00e9zane Priscila","family":"Reuter","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Health Promotion University of Santa Cruz Do Sul  Santa Cruz do Sul Rio Grande do Sul Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexandre","family":"Rieger","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Health Promotion University of Santa Cruz Do Sul  Santa Cruz do Sul Rio Grande do Sul Brazil"},{"name":"Department of Life Sciences University of Santa Cruz Do Sul  Santa Cruz do Sul Rio Grande do Sul Brazil"},{"name":"Postgraduate Program in Environmental Technology University of Santa Cruz Do Sul  Santa Cruz do Sul Rio Grande do Sul Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,3,31]]},"reference":[{"key":"e_1_2_10_2_1","unstructured":"Abbot Point of Care Inc.2020.\u201ci\u2010STAT CHEM8+ Cartridge.\u201d"},{"key":"e_1_2_10_3_1","unstructured":"Agrawal A. 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