• Gianni R Lorello, Julie K Silver, Genviève Moineau, Kristian McCarthy, and Alana M Flexman.
• Department of Anesthesia and Pain Medicine, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada.
• JAMA Netw Open. 2020 Nov 2; 3 (11): e2027938.

ImportanceDisparities in representation between sexes have been shown at multiple career stages in medicine despite increasing representation in the overall physician workforce.ObjectiveTo assess sex representation of applicants to the Canadian R-1 entry match for postgraduate training programs from 1995 to 2019, comparing distribution between different specialties as well as applied vs matched applicants.Design, Setting, And ParticipantsThis cross-sectional analysis of aggregate data provided by the Canadian Resident Matching Service between 1995 and 2019 analyzed aggregate data for the Canadian R-1 residency match from 1995 through 2019.ExposuresApplicant sex as reported in the Canadian Resident Matching Service database.Main Outcomes And MeasuresThe sex representation of applicants was compared and the longitudinal trends in sex representation were analyzed by specialty between 1995 and 2019. The sex representation of overall applicants to the Canadian R-1 entry match were compared with matched applicants, and both were stratified by specialty.ResultsA total of 48 424 applicants were identified (26 407 [54.5%] female applicants), of which 41 037 were matched applicants. Using specialty groupings, female applicants were most highly represented in obstetrics and gynecology (1776 of 2090 [85.0%]) and least represented in radiology (658 of 2055 [32.0%]). Within individual subspecialties, female applicants had the lowest representation in neurosurgery (90 of 394 [22.8%]). While female applicants represented an increasing proportion of the overall applicant population between 1995 and 2019 (z = 2.71; P = .007), significant increases were seen in some, but not all, individual specialties. Differences by sex were found among Canadian medical graduate match rates to their top-ranked specialty: female applicants had a lower likelihood of being rejected for family medicine (rejection of male applicants: OR, 0.46; 95% CI, 0.39-0.54; P < .001) and psychiatry (OR, 0.59; 95% CI, 0.46-0.76; P < .001) and were more likely to be rejected for all-encompassing surgery (acceptance of male applicants: OR, 1.19; 95% CI, 1.10-1.28; P < .001).Conclusions And RelevanceIncreasing representation of female residency applicants over time was seen in some, but not all, medical specialties in Canada, and sex-based differences in successful match rates were observed in some specialties. The reasons for these disparities require further investigation for corrective strategies to be identified.

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