Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Cadernos Saúde Coletiva (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1414-462X2016000100118 |
Resumo: | Abstract This study aimed to assess the extent of agreement between hemoglobin (Hb) and hematocrit (Ht), while also verifying whether anemia prevalence can be determined by hematocrit cut-off points. A hundred pairs of capillary Hb and Ht of children less than 5 years old were analyzed. The Hb and Ht concentrations were measured using HemoCue and microhematocrit centrifuge, respectively. The Bland and Altman’s method was used to assess the agreement between ‘observed Hb’ and ‘Hb estimated through Ht’ (Hb = Ht/3). The ROC curve was constructed based on the reference to anemia classification according to Hb. The subjects were classified according to the status of anemia obtained through the Ht, also evaluating the agreement regarding Hb. The area under the ROC curve identified that Ht <35% correctly classified 85% of subjects with Hb <11.0 g/dL. However, the cut-off point of <33% showed higher kappa (k = 0.49 against 0.41) and higher relative agreement (82% vs. 74%) compared to Ht <35%. Our findings indicate that capillary Hb and Ht could be used either together or separately to assess the prevalence of anemia. Considering the need to identify iron deficiency anemia with a single indicator in population studies, the use of Ht would be simpler and cost-saving. |
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Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years oldhematocrithemoglobinreproducibility of resultschild preschoolanemia, iron-deficiencyAbstract This study aimed to assess the extent of agreement between hemoglobin (Hb) and hematocrit (Ht), while also verifying whether anemia prevalence can be determined by hematocrit cut-off points. A hundred pairs of capillary Hb and Ht of children less than 5 years old were analyzed. The Hb and Ht concentrations were measured using HemoCue and microhematocrit centrifuge, respectively. The Bland and Altman’s method was used to assess the agreement between ‘observed Hb’ and ‘Hb estimated through Ht’ (Hb = Ht/3). The ROC curve was constructed based on the reference to anemia classification according to Hb. The subjects were classified according to the status of anemia obtained through the Ht, also evaluating the agreement regarding Hb. The area under the ROC curve identified that Ht <35% correctly classified 85% of subjects with Hb <11.0 g/dL. However, the cut-off point of <33% showed higher kappa (k = 0.49 against 0.41) and higher relative agreement (82% vs. 74%) compared to Ht <35%. Our findings indicate that capillary Hb and Ht could be used either together or separately to assess the prevalence of anemia. Considering the need to identify iron deficiency anemia with a single indicator in population studies, the use of Ht would be simpler and cost-saving.Instituto de Estudos em Saúde Coletiva da Universidade Federal do Rio de Janeiro2016-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1414-462X2016000100118Cadernos Saúde Coletiva v.24 n.1 2016reponame:Cadernos Saúde Coletiva (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJ10.1590/1414-462X201600010x01info:eu-repo/semantics/openAccessBrunken,Gisela SoaresFrança,Giovanny Vinícius Araújo deLuiz,Ronir RaggioSzarfarc,Sophia Cornblutheng2016-05-05T00:00:00Zoai:scielo:S1414-462X2016000100118Revistahttp://www.iesc.ufrj.br/cadernos/ONGhttps://old.scielo.br/oai/scielo-oai.phpabelha@iesc.ufrj.br||abelha@iesc.ufrj.br2358-291X1414-462Xopendoar:2016-05-05T00:00Cadernos Saúde Coletiva (Online) - Universidade Federal do Rio de Janeiro (UFRJ)false |
dc.title.none.fl_str_mv |
Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old |
title |
Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old |
spellingShingle |
Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old Brunken,Gisela Soares hematocrit hemoglobin reproducibility of results child preschool anemia, iron-deficiency |
title_short |
Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old |
title_full |
Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old |
title_fullStr |
Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old |
title_full_unstemmed |
Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old |
title_sort |
Agreement assessment between hemoglobin and hematocrit to detect anemia prevalence in children less than 5 years old |
author |
Brunken,Gisela Soares |
author_facet |
Brunken,Gisela Soares França,Giovanny Vinícius Araújo de Luiz,Ronir Raggio Szarfarc,Sophia Cornbluth |
author_role |
author |
author2 |
França,Giovanny Vinícius Araújo de Luiz,Ronir Raggio Szarfarc,Sophia Cornbluth |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Brunken,Gisela Soares França,Giovanny Vinícius Araújo de Luiz,Ronir Raggio Szarfarc,Sophia Cornbluth |
dc.subject.por.fl_str_mv |
hematocrit hemoglobin reproducibility of results child preschool anemia, iron-deficiency |
topic |
hematocrit hemoglobin reproducibility of results child preschool anemia, iron-deficiency |
description |
Abstract This study aimed to assess the extent of agreement between hemoglobin (Hb) and hematocrit (Ht), while also verifying whether anemia prevalence can be determined by hematocrit cut-off points. A hundred pairs of capillary Hb and Ht of children less than 5 years old were analyzed. The Hb and Ht concentrations were measured using HemoCue and microhematocrit centrifuge, respectively. The Bland and Altman’s method was used to assess the agreement between ‘observed Hb’ and ‘Hb estimated through Ht’ (Hb = Ht/3). The ROC curve was constructed based on the reference to anemia classification according to Hb. The subjects were classified according to the status of anemia obtained through the Ht, also evaluating the agreement regarding Hb. The area under the ROC curve identified that Ht <35% correctly classified 85% of subjects with Hb <11.0 g/dL. However, the cut-off point of <33% showed higher kappa (k = 0.49 against 0.41) and higher relative agreement (82% vs. 74%) compared to Ht <35%. Our findings indicate that capillary Hb and Ht could be used either together or separately to assess the prevalence of anemia. Considering the need to identify iron deficiency anemia with a single indicator in population studies, the use of Ht would be simpler and cost-saving. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1414-462X2016000100118 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1414-462X2016000100118 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1414-462X201600010x01 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto de Estudos em Saúde Coletiva da Universidade Federal do Rio de Janeiro |
publisher.none.fl_str_mv |
Instituto de Estudos em Saúde Coletiva da Universidade Federal do Rio de Janeiro |
dc.source.none.fl_str_mv |
Cadernos Saúde Coletiva v.24 n.1 2016 reponame:Cadernos Saúde Coletiva (Online) instname:Universidade Federal do Rio de Janeiro (UFRJ) instacron:UFRJ |
instname_str |
Universidade Federal do Rio de Janeiro (UFRJ) |
instacron_str |
UFRJ |
institution |
UFRJ |
reponame_str |
Cadernos Saúde Coletiva (Online) |
collection |
Cadernos Saúde Coletiva (Online) |
repository.name.fl_str_mv |
Cadernos Saúde Coletiva (Online) - Universidade Federal do Rio de Janeiro (UFRJ) |
repository.mail.fl_str_mv |
abelha@iesc.ufrj.br||abelha@iesc.ufrj.br |
_version_ |
1750128224905461760 |