{"id":130961,"date":"1996-01-01T00:00:00","date_gmt":"1996-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/anemia-ferropenica-y-bajo-peso-al-nacer\/"},"modified":"1996-01-01T00:00:00","modified_gmt":"1996-01-01T00:00:00","slug":"anemia-ferropenica-y-bajo-peso-al-nacer","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/anemia-ferropenica-y-bajo-peso-al-nacer\/","title":{"rendered":"Anemia ferropenica y bajo peso al nacer."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Romero Fernandez M. Isabel <\/strong><\/h2>\n<p>Se ha propuesto que la anemia ferropenica y la anemia durante el embarazo esta asociada a bajo peso al nacer.  con el objetivo de determinar el grado de dicha asociacion y la fraccion de bajo peso al nacer atribuible a anemia y\/o anemia ferropenica se ha revisado la evidencia publica entre los a\u00f1os 1985 y 1995, mediante un metaanalisis exploratorio. Se considero como variable de efecto indirecto parto pretermino debido a que es la causa de bajo peso al nacer mas frecuente en los paises industrializados. Resultados: han sido recuperados 9 trabajos originales, de dise\u00f1o transversal, que abordaron la asociacion entre anemia y parto pretermino. A pesar de que algunos trabajos encontraron asociacion, en todos ellos se observaron importantes amenazas a la validez interna: falta de control de factores de confusion, sesgos de seleccion y de malaclasificacion diferencial de la exposicion. Del mismo modo, adolecian de problemas de potencia estadistica y validez externa. En cuanto al metaanalisis cuantitativo: no se encontro asociacion entre anemia y parto pretermino (orp: 1.09 (0.95;1.26)).  sin embargo, si se encontro asociacion cuando la anemia se producia entre las semanas 13 a 28 (orp: 1.26 (1.08;1.47)). En el analisis de sensibilidad se observo que los estudios en los que existia mayor calidad metodologica se mantenia la falta de asociacion mientras que en aquellos con menor control sobre los problemas de validez mostraban asociacion estadisticamente significativa. Discusion: la falta de plausibilidad biologica y evidencia experimental previa; la incoherencia de algunos resultados encontrados, las importantes amenazas a la validez y el escaso nivel de evidencia de los dise\u00f1os transversales para demostrar causalidad hace improbable que las asociaciones encontradas por los autores sean causales. Ademas de lo se\u00f1alado, los resultados encontrados pudieron estar influidos por la presencia de sesgo de publicacion.  conclusiones: la ev<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Anemia ferropenica y bajo peso al nacer.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Anemia ferropenica y bajo peso al nacer. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Romero Fernandez M. Isabel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1996<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li> Gomez Lopez Luis Ignacio<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio Sierra L\u00f3pez <\/li>\n<li>Ana Almaraz G\u00f3mez (vocal)<\/li>\n<li>Ramon Nuviala Mateo (vocal)<\/li>\n<li>  (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Romero Fernandez M. Isabel Se ha propuesto que la anemia ferropenica y la anemia durante el embarazo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[155,9,218,139,161,13610],"tags":[9992,6588,6587,91631,244633],"class_list":["post-130961","post","type-post","status-publish","format-standard","hentry","category-ciencias-clinicas","category-ciencias-medicas","category-hematologia","category-medicina-interna","category-pediatria","category-zaragoza","tag-ana-almaraz-gomez","tag-antonio-sierra-lopez","tag-gomez-lopez-luis-ignacio","tag-ramon-nuviala-mateo","tag-romero-fernandez-m-isabel"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/130961","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=130961"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/130961\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=130961"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=130961"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=130961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}