{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,6,1]],"date-time":"2023-06-01T09:40:46Z","timestamp":1685612446363},"reference-count":0,"publisher":"IOS Press","isbn-type":[{"value":"9781643683881","type":"print"},{"value":"9781643683898","type":"electronic"}],"license":[{"start":{"date-parts":[[2023,5,18]],"date-time":"2023-05-18T00:00:00Z","timestamp":1684368000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,5,18]]},"abstract":"<jats:p>Background: Social media is an important medium for studying public attitudes toward COVID-19 vaccine mandates in Canada, and Reddit network communities are a good source for this. Methods: This study applied a \u201cnested analysis\u201d framework. We collected 20378 Reddit comments via the Pushshift API and developed a BERT-based binary classification model to screen for relevance to COVID-19 vaccine mandates. We then used a Guided Latent Dirichlet Allocation (LDA) model on relevant comments to extract key topics and assign each comment to its most relevant topic. Results: There were 3179 (15.6%) relevant and 17199 (84.4%) irrelevant comments. Our BERT-based model achieved 91% accuracy trained with 300 Reddit comments after 60 epochs. The Guided LDA model had an optimal coherence score of 0.471 with four topics: travel, government, certification, and institutions. Human evaluation of the Guided LDA model showed an 83% accuracy in assigning samples to their topic groups. Conclusion: We develop a screening tool for filtering and analyzing Reddit comments on COVID-19 vaccine mandates through topic modelling. Future research could develop more effective seed word-choosing and evaluation methods to reduce the need for human judgment.<\/jats:p>","DOI":"10.3233\/shti230266","type":"book-chapter","created":{"date-parts":[[2023,5,19]],"date-time":"2023-05-19T08:47:14Z","timestamp":1684486034000},"source":"Crossref","is-referenced-by-count":0,"title":["Investigating Canadian Public Attitudes Toward COVID-19 Vaccine Mandates with a Nested Analysis Framework"],"prefix":"10.3233","author":[{"given":"Yang","family":"Yang","sequence":"first","affiliation":[{"name":"School of Public Health Sciences, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaomeng","family":"Lei","sequence":"additional","affiliation":[{"name":"Computer Science, University of Waterloo, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zeping","family":"Zhou","sequence":"additional","affiliation":[{"name":"Computer Science, University of Waterloo, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shu-Feng","family":"Tsao","sequence":"additional","affiliation":[{"name":"School of Public Health Sciences, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zahid A.","family":"Butt","sequence":"additional","affiliation":[{"name":"School of Public Health Sciences, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helen H.","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Public Health Sciences, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"7437","container-title":["Studies in Health Technology and Informatics","Caring is Sharing \u2013 Exploiting the Value in Data for Health and Innovation"],"original-title":[],"link":[{"URL":"https:\/\/ebooks.iospress.nl\/pdf\/doi\/10.3233\/SHTI230266","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,5,31]],"date-time":"2023-05-31T15:01:34Z","timestamp":1685545294000},"score":1,"resource":{"primary":{"URL":"https:\/\/ebooks.iospress.nl\/doi\/10.3233\/SHTI230266"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,5,18]]},"ISBN":["9781643683881","9781643683898"],"references-count":0,"URL":"https:\/\/doi.org\/10.3233\/shti230266","relation":{},"ISSN":["0926-9630","1879-8365"],"issn-type":[{"value":"0926-9630","type":"print"},{"value":"1879-8365","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,5,18]]}}}