{"id":24331,"date":"2026-07-17T16:29:51","date_gmt":"2026-07-17T20:29:51","guid":{"rendered":"https:\/\/www.ices.on.ca\/?post_type=journal_article&#038;p=24331"},"modified":"2026-07-29T16:34:29","modified_gmt":"2026-07-29T20:34:29","slug":"influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario","status":"publish","type":"journal_article","link":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/","title":{"rendered":"Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study"},"content":{"rendered":"<p><strong>Background<\/strong> \u2014 Hypertensive disorders of pregnancy (HDP) are a leading global cause of maternal and fetal morbidity\/mortality. Most estimates of HDP occurrence are reported for composite exposures of HDP or preeclampsia alone, with limited disaggregation by obstetrical subgroup (eg, multi\u2010fetal deliveries). Consequently, our understanding of HDP prevalence and temporal trends remains limited, and methods for identifying specific diagnoses in administrative data remain underexamined. This population\u2010based descriptive study assessed how enhanced administrative case\u2010finding definitions influence prevalence estimates of HDP in pregnancy and postpartum.<\/p>\n<p><strong>Methods<\/strong> \u2014 Included were individuals aged \u226518\u2009years discharged from an Ontario hospital following their first obstetrical delivery between April 1, 2002, and December 31, 2017. We calculated overall and annual prevalence estimates and assessed temporal trends for any HDP and major subtypes by case\u2010finding definitions, stratified by plurality (singleton versus multi\u2010fetal deliveries).<\/p>\n<p><strong>Results<\/strong> \u2014 Most subjects had a singleton first delivery (n=781\u2009258; 98%); however, HDP was 2.2 to 2.4 times more prevalent in multi\u2010fetal deliveries. When pre\u2010pregnancy hypertension was considered during case\u2010finding, HDP prevalence increased from 193.6 to 207.6 per 1000 multi\u2010fetal deliveries and from 79.9 to 92.6 per 1000 singleton deliveries. Gestational hypertension was the most common diagnosis in both populations but was nearly twice as common in those who delivered a multiple gestation (94.4\u2013100.0 versus 49.7\u201353.4 per 1000 deliveries). Prevalence trends differed by coding strategy and plurality.<\/p>\n<p><strong>Conclusions<\/strong> \u2014 Although informative, data from discharge abstracts alone are insufficient for HDP surveillance, particularly for chronic hypertension in pregnancy. Validation studies should assess the accuracy of our case\u2010finding definitions against suitable reference standards.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Background \u2014 Hypertensive disorders of pregnancy (HDP) are a leading global cause of maternal and fetal morbidity\/mortality. Most estimates of HDP occurrence are reported for composite exposures of HDP or preeclampsia alone, with limited disaggregation by obstetrical subgroup (eg, multi\u2010fetal deliveries). Consequently, our understanding of HDP prevalence and temporal trends remains limited, and methods for [&hellip;]<\/p>\n","protected":false},"template":"","migration-helper-automated":[],"migration-manual":[],"topic":[40,26],"migration-helper-qa-sample-set":[],"class_list":["post-24331","journal_article","type-journal_article","status-publish","hentry","topic-cardiovascular-disease","topic-maternity-and-neonatal-care"],"acf":{"citation":"Johnston A, Petrcich W, Smith GN, Tanuseputro P, Lee DS, Coutinho T, Edwards JD. <em>J Am Heart Assoc<\/em>. 2026; 15(14): e046265. Epub 2026; Jul 17.","source_url":"https:\/\/doi.org\/10.1161\/jaha.125.046265","ices_scientist":[1290,1224],"site":[6734],"research_program":[6740],"news_release":"","journal_article":"","atlas":"","research_report":"","infographic":"","video":"","downloads":null,"links":null,"sitecore_item_id":"","sitecore_item_name":"","sitecore_field_values":"","previous_url":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ICES | Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study<\/title>\n<meta name=\"description\" content=\"Background \u2014 Hypertensive disorders of pregnancy (HDP) are a leading global cause of maternal and fetal morbidity\/mortality. Most estimates of HDP\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ICES | Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study\" \/>\n<meta property=\"og:description\" content=\"Background \u2014 Hypertensive disorders of pregnancy (HDP) are a leading global cause of maternal and fetal morbidity\/mortality. Most estimates of HDP\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/\" \/>\n<meta property=\"og:site_name\" content=\"ICES\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ICESOntario\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-29T20:34:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ices.on.ca\/wp-content\/uploads\/2024\/11\/ic-es-data-discovery-better-health-logo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/publications\\\/journal-articles\\\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\\\/\",\"url\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/publications\\\/journal-articles\\\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\\\/\",\"name\":\"ICES | Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/#website\"},\"datePublished\":\"2026-07-17T20:29:51+00:00\",\"dateModified\":\"2026-07-29T20:34:29+00:00\",\"description\":\"Background \u2014 Hypertensive disorders of pregnancy (HDP) are a leading global cause of maternal and fetal morbidity\\\/mortality. Most estimates of HDP\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/publications\\\/journal-articles\\\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/publications\\\/journal-articles\\\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/publications\\\/journal-articles\\\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Journal Articles\",\"item\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/publications\\\/journal-articles\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/#website\",\"url\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/\",\"name\":\"ICES\",\"description\":\"POPULATION-BASED HEALTH RESEARCH THAT MAKES A DIFFERENCE\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/#organization\"},\"alternateName\":\"Institute for Clinical Evaluative Sciences\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/#organization\",\"name\":\"ICES\",\"alternateName\":\"Institute for Clinical Evaluative Sciences\",\"url\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.ices.on.ca\\\/wp-content\\\/uploads\\\/2023\\\/04\\\/ices-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.ices.on.ca\\\/wp-content\\\/uploads\\\/2023\\\/04\\\/ices-logo.png\",\"width\":\"676\",\"height\":\"618\",\"caption\":\"ICES\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/ICESOntario\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/ices-research-institute\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"ICES | Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study","description":"Background \u2014 Hypertensive disorders of pregnancy (HDP) are a leading global cause of maternal and fetal morbidity\/mortality. Most estimates of HDP","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/","og_locale":"fr_FR","og_type":"article","og_title":"ICES | Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study","og_description":"Background \u2014 Hypertensive disorders of pregnancy (HDP) are a leading global cause of maternal and fetal morbidity\/mortality. Most estimates of HDP","og_url":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/","og_site_name":"ICES","article_publisher":"https:\/\/www.facebook.com\/ICESOntario\/","article_modified_time":"2026-07-29T20:34:29+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/www.ices.on.ca\/wp-content\/uploads\/2024\/11\/ic-es-data-discovery-better-health-logo.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/","url":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/","name":"ICES | Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study","isPartOf":{"@id":"https:\/\/www.ices.on.ca\/fr\/#website"},"datePublished":"2026-07-17T20:29:51+00:00","dateModified":"2026-07-29T20:34:29+00:00","description":"Background \u2014 Hypertensive disorders of pregnancy (HDP) are a leading global cause of maternal and fetal morbidity\/mortality. Most estimates of HDP","breadcrumb":{"@id":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/influence-of-enhanced-administrative-case-finding-strategies-on-prevalence-of-hypertensive-disorders-of-pregnancy-in-ontario\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.ices.on.ca\/fr\/"},{"@type":"ListItem","position":2,"name":"Journal Articles","item":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/"},{"@type":"ListItem","position":3,"name":"Influence of enhanced administrative case-finding strategies on prevalence of hypertensive disorders of pregnancy in Ontario: a population-based descriptive study"}]},{"@type":"WebSite","@id":"https:\/\/www.ices.on.ca\/fr\/#website","url":"https:\/\/www.ices.on.ca\/fr\/","name":"ICES","description":"POPULATION-BASED HEALTH RESEARCH THAT MAKES A DIFFERENCE","publisher":{"@id":"https:\/\/www.ices.on.ca\/fr\/#organization"},"alternateName":"Institute for Clinical Evaluative Sciences","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.ices.on.ca\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.ices.on.ca\/fr\/#organization","name":"ICES","alternateName":"Institute for Clinical Evaluative Sciences","url":"https:\/\/www.ices.on.ca\/fr\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.ices.on.ca\/fr\/#\/schema\/logo\/image\/","url":"https:\/\/www.ices.on.ca\/wp-content\/uploads\/2023\/04\/ices-logo.png","contentUrl":"https:\/\/www.ices.on.ca\/wp-content\/uploads\/2023\/04\/ices-logo.png","width":"676","height":"618","caption":"ICES"},"image":{"@id":"https:\/\/www.ices.on.ca\/fr\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/ICESOntario\/","https:\/\/www.linkedin.com\/company\/ices-research-institute\/"]}]}},"_links":{"self":[{"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/journal_article\/24331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/journal_article"}],"about":[{"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/types\/journal_article"}],"acf:post":[{"embeddable":true,"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/research_program\/6740"},{"embeddable":true,"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/site\/6734"},{"embeddable":true,"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/ices_scientist\/1224"},{"embeddable":true,"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/ices_scientist\/1290"}],"wp:attachment":[{"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/media?parent=24331"}],"wp:term":[{"taxonomy":"migration-helper-automated","embeddable":true,"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/migration-helper-automated?post=24331"},{"taxonomy":"migration-manual","embeddable":true,"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/migration-manual?post=24331"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/topic?post=24331"},{"taxonomy":"migration-helper-qa-sample-set","embeddable":true,"href":"https:\/\/www.ices.on.ca\/fr\/wp-json\/wp\/v2\/migration-helper-qa-sample-set?post=24331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}