{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T13:17:19Z","timestamp":1790083039504,"version":"4.0.1"},"reference-count":46,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2021,11,28]],"date-time":"2021-11-28T00:00:00Z","timestamp":1638057600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"Interprovincial Graduate Student Fund"},{"name":"Townsend Equine Health Research Fund"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J VET Diagn Invest"],"published-print":{"date-parts":[[2022,3]]},"abstract":"<jats:p>The Kenney\u2013Doig scale is a histopathology categorization (grading) system often used as the standard for assessing endometrial disease and communicating prognostic fertility information for equine breeding prospects. We investigated how Kenney\u2013Doig categories compared within the same institution and across different institutions to determine if observer variability may contribute to category frequencies. We conducted a retrospective analysis of all equine endometrial submission records between 1998 and 2018 at the Western College of Veterinary Medicine (WCVM) and Prairie Diagnostic Services (PDS). Of 726 biopsies, we found the following category distribution: 46 of 726 (6.3%) I, 307 of 726 (42.3%) IIA, 326 of 726 (44.9%) IIB, and 47 of 726 (6.5%) III. We also conducted a review of the literature and included 6 studies reporting Kenney\u2013Doig category distributions. Chi-square analysis showed significant differences between the category distribution found at WCVM and PDS and the category distribution reported in the 6 studies. To account for differences in mare populations, individual category distributions were generated for 5 pathologists at the WCVM and PDS. The Fisher exact test among these 5 Kenney\u2013Doig categories revealed significant differences in category tendencies, suggesting that observer variation affects the use of the scale. Our results suggest that there is a need for prospective inter-rater and intra-rater agreement studies of the repeatability of the Kenney\u2013Doig scale.<\/jats:p>","DOI":"10.1177\/10406387211062207","type":"journal-article","created":{"date-parts":[[2021,11,29]],"date-time":"2021-11-29T02:19:54Z","timestamp":1638152394000},"page":"206-214","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":9,"title":["IIB or not IIB, part 1: retrospective evaluation of Kenney\u2013Doig categorization of equine endometrial biopsies at a veterinary diagnostic laboratory and comparison with published reports"],"prefix":"10.1177","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5843-6611","authenticated-orcid":false,"given":"Jane","family":"Westendorf","sequence":"first","affiliation":[{"name":"Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bruce","family":"Wobeser","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tasha","family":"Epp","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2021,11,28]]},"reference":[{"key":"bibr1-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199909000-00014"},{"key":"bibr2-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1034\/j.1600-0528.2003.00013.x"},{"key":"bibr3-10406387211062207","doi-asserted-by":"publisher","DOI":"10.21836\/PEM20080122"},{"key":"bibr4-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2559.1998.00495.x"},{"key":"bibr5-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1016\/0895-4356(90)90107-Z"},{"key":"bibr6-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1016\/0895-4356(94)00225-F"},{"key":"bibr7-10406387211062207","first-page":"72","volume":"22","author":"Doig PA","year":"1981","journal-title":"Can Vet J"},{"key":"bibr8-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1016\/0093-691X(86)90110-X"},{"key":"bibr9-10406387211062207","doi-asserted-by":"crossref","first-page":"1209","DOI":"10.2460\/ajvr.1998.59.10.1209","volume":"59","author":"Evans TJ","year":"1998","journal-title":"Am J Vet Res"},{"key":"bibr10-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1097\/PAS.0b013e31825dd4b3"},{"key":"bibr11-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1111\/j.1439-0531.1995.tb00606.x"},{"key":"bibr12-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1294\/jes.25.45"},{"key":"bibr13-10406387211062207","first-page":"698","volume":"44","author":"Held J","year":"1991","journal-title":"J Reprod Fertil Suppl"},{"key":"bibr14-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2006.04.006"},{"key":"bibr15-10406387211062207","doi-asserted-by":"publisher","DOI":"10.1016\/0168-8278(95)80226-6"},{"key":"bibr16-10406387211062207","first-page":"211","volume":"35","author":"Kabisch J","year":"2019","journal-title":"! 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