According to the study:
- The percentage of heterosexual men who reported having sex with someone other than their wife dropped to 10 percent in 2000 from 28 percent in 1975.
- Among married women, it declined to 14 percent from 23 percent.
- Among gay men, the percentage that cheated on their partner dropped to 59 percent from 83 percent.
- For lesbians, it declined to 8 percent from 28 percent.
Experts attribute the drop to greater awareness of HIV, AIDS, and other STDs.