Iris de Nie

114 C H A P T E R 7 RESULTS A total of 8,015 people visited our gender identity clinic between 1972 and 2017 for either psychological, endocrine, or surgical treatment. After applying the in- and exclusion criteria, 3,026 trans women were included in the study cohort (Figure 1). The median follow-up time was 2.3 years (IQR 1.6-3.7) per person and the total follow-up time of the entire cohort was 11,223 years (Figure 2). 8,015 People seen at gender identity clinic between 1972 and 2017 1,963 Excluded 1,598 never used hormone treatment or with unknown startdate 31 alternating hormone use 21 <18 years at time of study (2020) 141 last visit before 1991 172 orchiectomy prior to start hormone treatment 3,026 Trans women included 4,989 Birth-assigned males 3,026 Birth-assigned females 1,914 underwent bilateral orchiectomy 1,112 no bilateral orchiectomy 722 histopathological analyses of orchiectomy specimens 1 testicular cancer case discovered in orchiectomy specimen 2 testicular cancer cases discovered due to symptoms Figure 1 . Study flowchart