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Previous Work: Prevalence
Prevalence of Transgenderism (1+)
- Janus 1993: Ever crossdressed: MTF 6%, FTM 3%
Prevalence of GID (5+)
- DSM IV GID 1994: MTF 1:30,000, FTM 1:100,000 (based on 1967 Swedish study)
- van Kesteren 1996: MTF 1:11,900, FTM 1:30,400 (Netherlands)
Prevalence of SRS (6+)
- Conway 2001: MTF 1:1333 to 1:1000
Notes:
Previous research has estimated the fraction of the population who is transgender to some degree.
The Janus Report on Human Sexual Behavior surveyed many people, in a context that removed most inhibitions, and among the questions was “Have you ever crossdressed.”
6% of men and 3% of women said that they had.
Estimates of the prevalence of Gender Identity Disorder help illustrate the number of transsexuals (5 or more on the Benjamin scale.)
The Diagnostic and Statistical Manual, version IV, of 1994, estimates that 1 in 30,000 males (becoming females) and 1 in 100,000 females (becoming males) has Gender Identity Disorder.
This appears to be based on a 1967 Swedish study with similar results.
In 1996, van Kesteren used clinical data from the Netherlands and found the prevalence of GID as 1 in 11,900 males and 1 in 30,400 females.
The only measure of Sex Reassignment Surgery rates comes from Conway, in a 2001 “position paper.”
Using a “back-of-the-envelope” methodology, Conway estimates that 1 in 1333 to 1000 US women is a post-operative transsexual.
This surprising number was much higher than previous estimates.