{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T01:08:42Z","timestamp":1779152922524,"version":"3.51.4"},"reference-count":31,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2025,6,25]],"date-time":"2025-06-25T00:00:00Z","timestamp":1750809600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Can. J. Neurol. Sci."],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec id=\"S0317167125101406_as1\">\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Knowledge of environmental triggers for migraine attacks is limited and has mostly been acquired by studies using emergency room (ER) visits. However, it is unlikely that ER visits are a random sample of migraine events, even within strata of migraine severity. Additionally, time lags between attack onset and ER visits may vary across the population, posing challenges for assessing causal links of migraine with community-level or ecologic exposures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0317167125101406_as2\">\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>Our objective was to assess the relationship between demographic and geographic measures and self-reported migraine-related ER visits.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0317167125101406_as3\">\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>We analyzed a targeted non-probability survey of ER use related to migraine in Canada and the USA. The 18-question online survey addressed ER use and behaviors related to recording attacks.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0317167125101406_as4\">\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>The final dataset included 389 respondents (Canada = 164 [42.2%], USA = 225 [57.8%]); 51 (13.1%) were Migraine Buddy app users who shared their diaries. In both countries, participants reported similar migraine symptoms. Barriers to attending the ER included cost and wait times. There was more variability in delays between attack onset and arrival to the ER than between onset and recording in the smartphone app. Younger participants and participants living in Canada were significantly more likely to present to the ER.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0317167125101406_as5\">\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>The sample of patients presenting to the ER for migraine may be biased toward younger patients and depend on the jurisdiction. Smartphone app records may have fewer barriers to creation and more consistent time lags compared to ER visit records.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1017\/cjn.2025.10140","type":"journal-article","created":{"date-parts":[[2025,6,25]],"date-time":"2025-06-25T06:59:36Z","timestamp":1750834776000},"page":"411-419","source":"Crossref","is-referenced-by-count":1,"title":["Measuring Migraine in Canada and the USA: An Online Survey of Emergency Room and Smartphone Application Use"],"prefix":"10.1017","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3393-1448","authenticated-orcid":false,"given":"Andrea E.","family":"Portt","sequence":"first","affiliation":[{"name":"University of Toronto Dalla Lana School of Public Health"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christine","family":"Lay","sequence":"additional","affiliation":[{"name":"Women\u2019s College Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hong","family":"Chen","sequence":"additional","affiliation":[{"name":"University of Toronto Dalla Lana School of Public Health"},{"name":"Health Canada"},{"name":"Public Health Ontario"},{"name":"Institute for Clinical Evaluative Sciences"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erjia","family":"Ge","sequence":"additional","affiliation":[{"name":"University of Toronto Dalla Lana School of Public Health"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter M.","family":"Smith","sequence":"additional","affiliation":[{"name":"University of Toronto Dalla Lana School of Public Health"},{"name":"Institute for Work and Health"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2025,6,25]]},"reference":[{"key":"S0317167125101406_ref15","volume-title":"Epidemiology: An Introduction","author":"Rothman","year":"2012"},{"key":"S0317167125101406_ref16","unstructured":"16. Tenzer, F. Smartphones - Nutzer weltweit 2016-2028, 2024. Available at: 2024. https:\/\/de.statista.com\/statistik\/daten\/studie\/309656\/umfrage\/prognose-zur-anzahl-der-smartphone-nutzer-weltweit\/."},{"key":"S0317167125101406_ref8","doi-asserted-by":"publisher","DOI":"10.1007\/s40572-024-00449-4"},{"key":"S0317167125101406_ref21","unstructured":"21. R Core team. R: A language and environment for statistical computing, 2024, Vienna, Austria. https:\/\/www.r-project.org."},{"key":"S0317167125101406_ref28","doi-asserted-by":"publisher","DOI":"10.1111\/head.14456"},{"key":"S0317167125101406_ref1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(18)32279-7"},{"key":"S0317167125101406_ref22","unstructured":"22. Canadian Institute for Health Information. Commonwealth fund survey, 2023. Accessed July 17, 2024. https:\/\/www.cihi.ca\/en\/commonwealth-fund-survey-2023."},{"key":"S0317167125101406_ref26","unstructured":"26. US Census Bureau. Statistical abstract of the united states: 2011. https:\/\/www.census.gov\/library\/publications\/2010\/compendia\/statab\/130ed.html."},{"key":"S0317167125101406_ref4","doi-asserted-by":"publisher","DOI":"10.5271\/sjweh.3583"},{"key":"S0317167125101406_ref11","doi-asserted-by":"publisher","DOI":"10.1111\/head.14632"},{"key":"S0317167125101406_ref31","first-page":"1","article-title":"Comparison of self-administered survey questionnaire responses collected using mobile apps versus other methods","volume":"7","author":"Marcano Belisario","year":"2015","journal-title":"Cochrane Db Syst Rev"},{"key":"S0317167125101406_ref29","first-page":"3","article-title":"Gender and survey participation: An event history analysis of the gender effects of survey participation in a probability-based multi-wave panel study with a sequential mixed-mode design","volume":"16","author":"Becker","year":"2022","journal-title":"Methods, data, analyses"},{"key":"S0317167125101406_ref17","doi-asserted-by":"publisher","DOI":"10.2196\/17691"},{"key":"S0317167125101406_ref10","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhazmat.2023.133362"},{"key":"S0317167125101406_ref24","unstructured":"24. 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NACRS emergency department visits and lengths of stay 2024."},{"key":"S0317167125101406_ref3","doi-asserted-by":"publisher","DOI":"10.1159\/000495016"},{"key":"S0317167125101406_ref2","doi-asserted-by":"publisher","DOI":"10.1111\/head.14463"},{"key":"S0317167125101406_ref18","doi-asserted-by":"publisher","DOI":"10.11613\/BM.2013.018"}],"container-title":["Canadian Journal of Neurological Sciences \/ Journal Canadien des Sciences Neurologiques"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0317167125101406","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T00:35:53Z","timestamp":1779150953000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0317167125101406\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,6,25]]},"references-count":31,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,5]]}},"alternative-id":["S0317167125101406"],"URL":"https:\/\/doi.org\/10.1017\/cjn.2025.10140","relation":{},"ISSN":["0317-1671","2057-0155"],"issn-type":[{"value":"0317-1671","type":"print"},{"value":"2057-0155","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,6,25]]}}}