{"id":1931,"date":"2022-09-21T00:00:00","date_gmt":"2022-09-21T04:00:00","guid":{"rendered":"https:\/\/icesontario.wpengine.com\/journal-articles\/positive-predictive-value-of-primary-subarachnoid-hemorrhage-diagnoses-on-death-certificates\/"},"modified":"2023-06-14T19:44:59","modified_gmt":"2023-06-14T23:44:59","slug":"positive-predictive-value-of-primary-subarachnoid-hemorrhage-diagnoses-on-death-certificates","status":"publish","type":"journal_article","link":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/positive-predictive-value-of-primary-subarachnoid-hemorrhage-diagnoses-on-death-certificates\/","title":{"rendered":"Positive predictive value of primary subarachnoid hemorrhage diagnoses on death certificates"},"content":{"rendered":"

Purpose<\/strong> — Epidemiological studies of primary subarachnoid hemorrhage (pSAH) frequently include population-based death registries for case finding. The positive predictive value of pSAH diagnoses in death registries is unknown.<\/p>\n

Methods<\/strong> — This cross-sectional study identified all people in Ontario, Canada with pSAH listed as a cause of death between 2013 and 2017. pSAH was classified as “very likely” if diagnosis of pSAH was confirmed by autopsy, there was a previous hospitalization where pSAH probability exceeded 85% or death was preceded within a week by an emergency room visit where pSAH probability exceeded 25%. pSAH was classified as “very unlikely” if previous cerebrovascular imaging had never been done. Remaining cases were classified as “pSAH status unknown”.<\/p>\n

Results<\/strong> — 1,613 deaths attributed to pSAH were identified (mean 322\/year). pSAH classification frequencies were as follows: very likely 528 (32.7%); very unlikely 433 (26.8%); and status unknown 652 (40.4%).<\/p>\n

Conclusion<\/strong> — We found that a quarter of pSAH cases in our province’s death registry were very unlikely to be true pSAH while 40% had unknown veracity. These data should be considered when using death registries for pSAH case finding.<\/p>\n","protected":false},"excerpt":{"rendered":"

Purpose — Epidemiological studies of primary subarachnoid hemorrhage (pSAH) frequently include population-based death registries for case finding. The positive predictive value of pSAH diagnoses in death registries is unknown. Methods — This cross-sectional study identified all people in Ontario, Canada with pSAH listed as a cause of death between 2013 and 2017. pSAH was classified […]<\/p>\n","protected":false},"template":"","migration-helper-automated":[],"migration-manual":[],"topic":[],"migration-helper-qa-sample-set":[],"class_list":["post-1931","journal_article","type-journal_article","status-publish","hentry"],"acf":{"citation":"English S, van Walraven C. Clin Invest Med<\/em>. 2022; 45(3):E9-13. Epub 2022 Sep 21.","source_url":"https:\/\/doi.org\/10.25011\/cim.v45i3.38874","ices_scientist":[1119],"site":[6734],"research_program":[],"news_release":[],"journal_article":[],"atlas":[],"research_report":[],"infographic":[],"video":[],"downloads":null,"links":null,"sitecore_item_id":"EE07232F-FD78-40D0-B0CC-7B4496438688","sitecore_item_name":"Positive-predictive-value-of-primary-subarachnoid-hemorrhage-diagnoses-on-death-certificates","sitecore_field_values":"{\n \"Title\": \"Positive predictive value of primary subarachnoid hemorrhage diagnoses on death certificates\",\n \"Short title\": \"Positive predictive value of primary\",\n \"Summary\": \"This study found that a quarter of primary subarachnoid hemorrhage cases in Ontario\u2019s death registry were very unlikely to be true primary subarachnoid hemorrhage while 40% had unknown veracity. \",\n \"Citation\": \"

English S, van Walraven C. Clin Invest Med<\/em>. 2022; 45(3):E9-13. Epub 2022 Sep 21. DOI: https:\/\/doi.org\/10.25011\/cim.v45i3.38874<\/a><\/p>\",\n \"Abstract\": \"

Purpose<\/strong> — Epidemiological studies of primary subarachnoid hemorrhage (pSAH) frequently include population-based death registries for case finding. The positive predictive value of pSAH diagnoses in death registries is unknown.<\/p>n

Methods<\/strong> — This cross-sectional study identified all people in Ontario, Canada with pSAH listed as a cause of death between 2013 and 2017. pSAH was classified as “very likely” if diagnosis of pSAH was confirmed by autopsy, there was a previous hospitalization where pSAH probability exceeded 85% or death was preceded within a week by an emergency room visit where pSAH probability exceeded 25%. pSAH was classified as “very unlikely” if previous cerebrovascular imaging had never been done. Remaining cases were classified as “pSAH status unknown”.<\/p>n

Results<\/strong> — 1,613 deaths attributed to pSAH were identified (mean 322\/year). pSAH classification frequencies were as follows: very likely 528 (32.7%); very unlikely 433 (26.8%); and status unknown 652 (40.4%).<\/p>n

Conclusion<\/strong> — We found that a quarter of pSAH cases in our province’s death registry were very unlikely to be true pSAH while 40% had unknown veracity. 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