{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T00:54:10Z","timestamp":1747184050011,"version":"3.40.5"},"reference-count":21,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2019,3,6]],"date-time":"2019-03-06T00:00:00Z","timestamp":1551830400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Ontario Ministry of Labour","award":["Centre for Research Expertise in Occupational DiseConflict of interests: none declared"],"award-info":[{"award-number":["Centre for Research Expertise in Occupational DiseConflict of interests: none declared"]}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Contact Dermatitis"],"published-print":{"date-parts":[[2019,6]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Patch testing is the key diagnostic test for diagnosing allergic contact dermatitis, but there is limited information on the use of patch testing at the population level.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To utilize Ontario Health Insurance Plan (OHIP) data to analyse trends in the rate of patch testing in Ontario.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Patch testing billing data submitted to the OHIP between 1992 and 2014 were analysed. Two patch test billing codes were investigated: one for work\u2010related testing (G198), and one for non\u2010work\u2010related testing (G206). Rates of patch testing overall were calculated, and trends over time were described.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There were 51\u2009576 patch test billings: 48\u2009416 non\u2010work\u2010related and 3160 work\u2010related. The annual rate of non\u2010work\u2010related patch testing (G206) ranged from 11.9 per 100\u2009000 people to 25.9 per 100\u2009000 people, increasing over time. The rate of work\u2010related patch testing (G198) ranged from 0.17 to 2.32 per 1 000\u2009000 people, and was relatively stable. The overall distribution of billing by specialty was 70% dermatology, 19% other medical subspecialties, and 10% paediatrics and family medicine.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Administrative health data can contribute to a more complete understanding of patch test utilization at the population level and, over time, can be used to track patch testing practices.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cod.13229","type":"journal-article","created":{"date-parts":[[2019,1,24]],"date-time":"2019-01-24T23:32:06Z","timestamp":1548372726000},"page":"386-390","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Using health insurance administrative data to explore patch testing utilization in Ontario, Canada\u2014An untapped resource"],"prefix":"10.1111","volume":"80","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9587-4207","authenticated-orcid":false,"given":"Victoria H.","family":"Arrandale","sequence":"first","affiliation":[{"name":"Dalla Lana School of Public Health University of Toronto  Toronto Ontario Canada"},{"name":"Occupational Cancer Research Centre  Toronto Ontario Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dorothy L.","family":"Holness","sequence":"additional","affiliation":[{"name":"Dalla Lana School of Public Health University of Toronto  Toronto Ontario Canada"},{"name":"Department of Medicine University of Toronto  Toronto Ontario Canada"},{"name":"Division of Occupational Medicine, Department of Medicine St Michael's Hospital  Toronto Ontario Canada"},{"name":"Centre for Urban Health Solutions, Li Ka Shing Knowledge Institute St Michael's Hospital  Toronto Ontario Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,3,6]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/cod.12432"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/bjd.15239"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/0190-9622(92)70145-6"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1053\/ajcd.2002.32856"},{"key":"e_1_2_7_6_1","first-page":"5","article-title":"Patch\u2010testing practices of American Contact Dermatitis Society members: a cross\u2010sectional survey","volume":"14","author":"Warshaw EM","year":"2003","journal-title":"Am J Contact Dermat"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.2310\/6620.2010.09074"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1053\/ajcd.2002.36642"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1053\/ajcd.2002.36639"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1034\/j.1600-0536.2000.043001031.x"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0536.2011.02025.x"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/DER.0000000000000190"},{"key":"e_1_2_7_13_1","unstructured":"Ontario Ministry of Health and Long Term Care Schedule of Benefits\u2014Physician Services under the Health Insurance Act (December 22 2015 [effective March 1 2016]).http:\/\/www.health.gov.on.ca\/en\/pro\/programs\/ohip\/sob\/physserv\/sob_master20160401.pdf"},{"key":"e_1_2_7_14_1","unstructured":"Local Health Integration Network (LHIN). 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