In the first large-scale empirical study worldwide to link specific practices with orgasm, reported in the Journal of Sex Research in 2006, demographic and sexual history variables were comparatively weakly associated with orgasm. Data was analysed from the Australian Study of Health and Relationships, a national telephone survey of sexual behaviour and attitudes and sexual health knowledge carried out in 2001–2002, with a representative sample of 19,307 Australians aged 16 to 59. Practices included “vaginal intercourse alone (12%), vaginal + manual stimulation of the man’s and/or woman’s genitals (49%), and vaginal intercourse + manual + oral (32%)” and the encounters may also have included other practices. Men had an orgasm in 95% of encounters and women in 69%. Generally, the more practices engaged in, the higher a woman’s chance of having an orgasm. Women were more likely to reach orgasm in encounters including cunnilingus”.