Olsson Stig-Eric, Möller Anders R
Department of Obstetrics and Gynecology, Göteborg University, Göteborg, Sweden.
Arch Sex Behav. 2003 Aug;32(4):381-6. doi: 10.1023/a:1024051201160.
The purpose of this study was to investigate whether the incidence of transsexualism in Sweden has been stable over the period of the three decades sex reassignment has been permitted by law in Sweden and whether there has been a change over time in the sex ratio of those requesting sex reassignment surgery (SRS). The incidence and sex ratio of transsexualism were calculated on the basis of the total number of applications for sex reassignment submitted to the National Board of Health and Welfare between July 1972 and June 2002. The frequency data were then analyzed in relation to the number of SRSs performed, age at the time SRS was requested, and the proportion of applicants of foreign origin. The results showed that the incidence of transsexualism was not stable during the study period of three decades. The sex ratio changed from almost 1:1 in the late 1960s to almost 2:1 in favor of male-to-female (MF) transsexuals in the 1990s. The number of SRSs performed rose considerably after the mid- 1980s. On average, MF transsexuals are now 6 years older than female-to-male (FM) transsexuals when they apply for SRS, and MF transsexuals are currently about 8 years older at the time of application than they were 20 years ago. The proportion of applications from applicants of foreign origin increased during the 1990s.
本研究的目的是调查在瑞典法律允许性别重新分配的三十年期间，瑞典易性癖的发病率是否保持稳定，以及请求性别重置手术（SRS）的人群的性别比例是否随时间发生了变化。易性癖的发病率和性别比例是根据1972年7月至2002年6月期间提交给国家卫生和福利委员会的性别重新分配申请总数计算得出的。然后，针对所实施的性别重置手术数量、请求性别重置手术时的年龄以及外国裔申请人的比例，对频率数据进行了分析。结果显示，在三十年的研究期间，易性癖的发病率并不稳定。性别比例从20世纪60年代末的几乎1:1变为20世纪90年代的近2:1，有利于男变女（MF）易性者。20世纪80年代中期之后，所实施的性别重置手术数量大幅上升。平均而言，MF易性者现在申请性别重置手术时比女变男（FM）易性者大6岁，并且MF易性者目前申请时的年龄比20年前大8岁左右。20世纪90年代，外国裔申请人的申请比例有所增加。
