{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T06:07:55Z","timestamp":1791958075993,"version":"4.3.4"},"reference-count":45,"publisher":"BMJ","license":[{"start":{"date-parts":[[2023,3,15]],"date-time":"2023-03-15T00:00:00Z","timestamp":1678838400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ"],"accepted":{"date-parts":[[2023,2,13]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To examine whether maternal opioid treatment after delivery is associated with an increased risk of adverse infant outcomes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Population based cohort study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>Ontario, Canada.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>865\u2009691 mother-infant pairs discharged from hospital alive within seven days of delivery from 1 September 2012 to 31 March 2020. Each mother who filled an opioid prescription within seven days of discharge was propensity score matched to a mother who did not.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Main outcome measures<\/jats:title>\n                    <jats:p>The primary outcome was hospital readmission of infants for any reason within 30 days of their mother filling an opioid prescription (index date). Infant related secondary outcomes were any emergency department visit, hospital admission for all cause injury, admission to a neonatal intensive care unit, admission with resuscitation or assisted ventilation, and all cause death.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>85\u2009675 mothers (99.8% of the 85\u2009852 mothers prescribed an opioid) who filled an opioid prescription within seven days of discharge after delivery were propensity score matched to 85\u2009675 mothers who did not. Of the infants admitted to hospital within 30 days, 2962 (3.5%) were born to mothers who filled an opioid prescription compared with 3038 (3.5%) born to mothers who did not. Infants of mothers who were prescribed an opioid were no more likely to be admitted to hospital for any reason than infants of mothers who were not prescribed an opioid (hazard ratio 0.98, 95% confidence interval 0.93 to 1.03) and marginally more likely to be taken to an emergency department in the subsequent 30 days (1.04, 1.01 to 1.08), but no differences were found for any other adverse infant outcomes and there were no infant deaths.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Findings from this study suggest no association between maternal opioid prescription after delivery and adverse infant outcomes, including death.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmj-2022-074005","type":"journal-article","created":{"date-parts":[[2023,3,15]],"date-time":"2023-03-15T20:00:12Z","timestamp":1678910412000},"page":"e074005","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":15,"title":["Maternal opioid treatment after delivery and risk of adverse infant outcomes: population based cohort study"],"prefix":"10.1136","volume":"380","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9776-807X","authenticated-orcid":false,"given":"Jonathan S","family":"Zipursky","sequence":"first","affiliation":[{"name":"Department of Medicine, Sunnybrook Health Sciences Centre, Toronto ON M4N 3M5, Canada"},{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Sunnybrook Research Institute, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tara","family":"Gomes","sequence":"additional","affiliation":[{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada"},{"name":"Li Ka Shing Knowledge Institute, St Michael\u2019s Hospital, Toronto, Ontario, Canada"},{"name":"Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karl","family":"Everett","sequence":"additional","affiliation":[{"name":"ICES, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Calzavara","sequence":"additional","affiliation":[{"name":"ICES, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J Michael","family":"Paterson","sequence":"additional","affiliation":[{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter C","family":"Austin","sequence":"additional","affiliation":[{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Sunnybrook Research Institute, Toronto, Ontario, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muhammad M","family":"Mamdani","sequence":"additional","affiliation":[{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada"},{"name":"Li Ka Shing Knowledge Institute, St Michael\u2019s Hospital, Toronto, Ontario, Canada"},{"name":"Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joel G","family":"Ray","sequence":"additional","affiliation":[{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada"},{"name":"Li Ka Shing Knowledge Institute, St Michael\u2019s Hospital, Toronto, Ontario, Canada"},{"name":"Department of Medicine, St Michael\u2019s Hospital, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David N","family":"Juurlink","sequence":"additional","affiliation":[{"name":"Department of Medicine, Sunnybrook Health Sciences Centre, Toronto ON M4N 3M5, Canada"},{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Sunnybrook Research Institute, Toronto, Ontario, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2023,3,15]]},"reference":[{"key":"2025110102160915000_380.mar15_1.e074005.1","unstructured":"Centers for Disease Control and Prevention. 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