Men are more likely to orgasm when sex includes vaginal intercourse and women are more likely to orgasm when they engage in a variety of sex acts, a new study has revealed.

Findings from the study of sexual and sexual-health behaviours conducted by Indiana University has provided an updated and much needed snapshot of contemporary Americans'' sexual behaviours, including a description of more than 40 combinations of sexual acts that people perform during sexual events, patterns of condom use by adolescents and adults, and the percentage of Americans participating in same-sex encounters.