Skip to main content
. 2019 Sep 26;7(3):E598–E609. doi: 10.9778/cmajo.20180028

Table 2:

Characteristics of included primary studies (reviews 1 and 2)

Investigator (review) Study design Eligibility criteria Country Study period Total sample size Source of funding Study quality
Brown et al., 201520 (review 1) Retrospective cohort
  • Trans-related diagnosis (i.e., gender identity disorder, gender identity disorder not otherwise specified, transvestic fetishism, transsexualism)

  • Veteran

  • Accessed medical and mental health services at VHA facility

United States 17 yr (Oct. 1, 1996, to Sept. 30, 2013) 5135 Authors employed by VHA
No grant or commercial funding
Fair*
Gooren et al., 201321 (review 1) Retrospective cohort
  • Trans person

  • Minimum 6-yr follow-up

The Netherlands 38 yr (1975 to Dec. 31, 2012) 3102 Two authors received noncommercial support Fair*
Weyers et al., 201023 (review 2) Cross-sectional
  • Dutch-speaking trans women

  • Received sex reassignment surgery at least 6 mo before enrolment

  • Consulted Ghent University Hospital gender team during previous 12 mo

Belgium 4 mo (Mar–June 2007) 50 First author received commercial support Poor
Kuroda et al., 200822 (review 1) Retrospective cohort
  • Trans men

  • Underwent mastectomy at surgical institute

Japan 9 yr (1998–2006) 186 NR Poor*

Note: NR = not reported, VHA = Veterans Health Administration.

*

Assessed with the Newcastle–Ottawa Scale.16,33 Detailed results of the quality assessment are provided in Supplementary Table S2, Appendix 4 (available at www.cmajopen.ca/content/7/3/E598/suppl/DC1).

No formal critical appraisal tool was used; methodological quality was assessed by considering key methodological components such as the selection of participants, and exposure and outcome assessments.

Detailed results of the quality assessment are provided in Supplementary Table S3, Appendix 4.