{"id":540829,"date":"2023-01-19T02:30:03","date_gmt":"2023-01-18T23:30:03","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/premature-birth-linked-to-poorer-school-grades-in-adolescence\/"},"modified":"2023-01-19T02:30:03","modified_gmt":"2023-01-18T23:30:03","slug":"premature-birth-linked-to-poorer-school-grades-in-adolescence","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/premature-birth-linked-to-poorer-school-grades-in-adolescence\/","title":{"rendered":"#Premature birth linked to poorer school grades in adolescence"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a40886d7ccd2\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a40886d7ccd2\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/premature-birth-linked-to-poorer-school-grades-in-adolescence\/#%E2%80%9CPremature_birth_linked_to_poorer_school_grades_in_adolescence%E2%80%9D\" >&#8220;Premature birth linked to poorer school grades in adolescence&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CPremature_birth_linked_to_poorer_school_grades_in_adolescence%E2%80%9D\"><\/span>&#8220;Premature birth linked to poorer school grades in adolescence&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2023\/newborn-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2023\/newborn-1.jpg\" data-sub-html=\"Credit: Unsplash\/CC0 Public Domain\">\n<figure class=\"article-img\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2023\/newborn-1.jpg\" alt=\"newborn\" title=\"Credit: Unsplash\/CC0 Public Domain\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Credit: Unsplash\/CC0 Public Domain<br \/>\n            <\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p>Premature birth, before 34 weeks of pregnancy, is linked to lower scores in math and language tests as a teenager compared with those born at 40 weeks, finds a large Danish population study published today in <i>The BMJ<\/i>.\n                                                <\/p>\n<p>The study, however, found no substantial difference in later brain (cognitive) function in babies born between 34-39 weeks and those born at 40 weeks. And the researchers acknowledge that cognitive outcomes are not predetermined at birth but are heavily influenced by <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/social-mediaa\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Social Media\" target=\"_blank\" rel=\"noopener\">social<\/a> circumstances.<\/p>\n<p>It is estimated that around 15 million infants are born preterm, before 37 weeks of pregnancy, worldwide each year. The final weeks of pregnancy are significant for fetal brain development, and preterm and early-term birth are thought to have a negative impact on later brain function.<\/p>\n<p>However, previous studies have been relatively small, primarily limited to one measure, or didn&#8217;t sufficiently adjust for other factors that could have influenced the results.<\/p>\n<p>To more accurately determine the impact of gestational age\u2014duration of pregnancy in weeks\u2014at birth on long-term cognitive function, the researchers analyzed data for all full siblings born in Denmark from January 1, 1986 to December 31, 2003.<\/p>\n<p>A total of 1.2 million children were born in this period, of whom 792,724 had at least one full sibling born in the same period, which allowed the researchers to take into account hereditary factors such as maternal intelligence.<\/p>\n<p>Using nationwide registry information, the researchers analyzed gestational age at birth, along with their exam results in written Danish language and math at age 15-16, and separately, the results of intelligence tests taken by 227,403 brothers aged around 18, at mandatory military con<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">script<\/a>ion.<\/p>\n<p>Potentially influential factors, including sex, birth weight, parental age and educational level at birth, number of older siblings, and shared family factors between siblings were also taken into account in the analysis.<\/p>\n<p>The researchers calculated how far an exam result was above or below the average grade, and compared this score for siblings at each gestational age to the score for siblings born at term.<\/p>\n<p>Overall, 44,322 (5.6%) of the 792,724 children were born before 37 weeks. Of these, only those born before 34 weeks had significantly lower than average math scores than those born at 40 weeks, and grades progressively decreased with increasing prematurity.<\/p>\n<p>For written language, however, only children born at or less than 27 weeks showed a significantly lower than average grade.<\/p>\n<p>Analysis of military conscription intelligence test scores, measured in IQ points, also showed markedly lower test scores for those born before 34 weeks.<\/p>\n<p>For those born after 34 weeks, there was a less than 1 point reduction in IQ, compared with those born at 40 weeks. But there was a 2.4 point IQ reduction for those born between 32-33 weeks, a 3.8 point reduction for 28-31 weeks, and a 4.2 point reduction for those born at or before 27 weeks.<\/p>\n<p>This is an observational study so can&#8217;t establish cause and the researchers also acknowledge some limitations. For instance, smoking during pregnancy was not recorded before 1991, and test results may differ from real-life outcomes such as lifetime income.<\/p>\n<p>But they say the study has the advantage of a large sample size and their sibling comparison design most likely accounts for other factors such as maternal smoking. Results were also similar after further analyses, such as including children who did not take exams, suggesting that the findings withstand scrutiny.<\/p>\n<p>While underlying reasons for these findings are still not clear, the researchers suggest that as low cognitive ability is linked to decreased quality of life and early death, their findings &#8220;stress the need for more research into how these adverse outcomes can be prevented.&#8221;<\/p>\n<p>They add, &#8220;Cognitive outcomes are not, however, predetermined at birth but are heavily influenced by social circumstances and nurturing, and this is why early intervention is warranted for children born early preterm.&#8221;<\/p>\n<p>In a linked editorial, Canadian researchers acknowledge that cognitive deficits in early life could have a lifelong influence on a person&#8217;s capacity and capabilities.<\/p>\n<p>However, they say that although parents and clinicians should be aware of potential educational and cognitive difficulties associated with preterm birth, &#8220;parents should be reassured that the magnitude of these differences is not always substantial, particularly for those born at later gestations.&#8221;<\/p>\n<p>And they suggest that sibling comparisons have caveats and that since the causes of preterm birth are complex and poorly understood, &#8220;efforts to identify and improve on other socio-environmental factors could be a more successful approach to mitigating any associated neurocognitive deficits.&#8221;<\/p>\n<div class=\"article-main__more p-4\">\n<p>\n                                                        <strong>More information:<\/strong><br \/>\n                                                        Gestational age at birth and cognitive outcomes in adolescence: population based full sibling cohort study, <i>The BMJ<\/i> (2023). <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1136\/bmj-2022-072779\">DOI: 10.1136\/bmj-2022-072779<\/a><\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    British Medical Journal<br \/>\n                                                                                                        <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.bmj.com\/channels\/research.dtl\"><br \/>\n                                                        <svg><use href=\"https:\/\/medx.b-cdn.net\/tmpl\/v6\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/><\/svg><\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 Premature birth linked to poorer school grades in adolescence (2023, January 18)<br \/>\n                                                 retrieved 19 January 2023<br \/>\n                                                 from https:\/\/medicalxpress.com\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2023-01-premature-birth-linked-poorer-school.html<\/p>\n<p>                                            This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n                                            part may be reproduced without the written permission. The content is provided for information purposes only.<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong>\n<\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/science\/\" target=\"_blank\" rel=\"noopener\">Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/medicalxpress.com\/news\/2023-01-premature-birth-linked-poorer-school.html\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Premature birth linked to poorer school grades in adolescence&#8221; Credit: Unsplash\/CC0 Public Domain Premature birth, before 34 weeks of pregnancy, is linked to lower scores in math and language tests as a teenager compared with those born at 40 weeks, finds a large Danish population study published today in The BMJ. The study, however, found&#8230;<\/p>\n","protected":false},"author":1,"featured_media":540830,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2023\/newborn-1.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-540829","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/540829","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=540829"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/540829\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/540830"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=540829"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=540829"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=540829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}