Indiana University's Center for Sexual Health Promotion has conducted the largest and most comprehensive national survey of Americans' sexual behavior since 1994. The study, which is published as a special issue of Journal of Sexual Medicine, offers detailed findings on how often Americans have sex, with whom and how they respond. In all, 5,865 people, ranging in age from 14 to 94, participated in the survey. The survey found that respondents participated in 41 different combinations of sexual acts. There was a high rate of condom use among 14- to 17-year-olds. Of those surveyed, 79 percent of the boys who had recently had sex used condoms, compared with 29 percent for all men in the survey. One can deduce that teens are being more responsible about condom use than adults, which is scary and surprising. The study also found a perception gap between men who think their female partners have orgasms and females who actually do have them. No surprise there. In addition, rates of condom usage among black and Hispanic men were significantly higher than for whites, which might suggest that promoting condom usage and HIV awareness and prevention in black and brown communities is actually working. Now, that's a pleasant surprise — a public service campaign that is actually working.

Read more at CBS News.