Unsafe sexual behavior and alcohol use at the event level: results of a national survey.

In recent years, several researchers have suggested that the use of alcohol in conjunction with sexual activity significantly increases the probability that unsafe or risky sexual behavior will occur. However, the majority of studies examining this relationship have utilized general measures of drinking frequency and sexual behavior, and are therefore unable to establish whether the drinking and risky sex occur on the same occasion. In this study, adult respondents in a national survey were asked about the circumstances of two sexual encounters: their most recent sexual experience and their most recent encounter involving a new sexual partner. The characteristics of encounters that involved and did not involve drinking are described. The results showed that although encounters with new partners were more likely to involve alcohol, the presence of alcohol in the event was not significantly associated with risky sexual activity. The occurrence of risky sexual behavior was predicted by a number of individual and situational variables, including sexual attitudes, drinking habits, and personality characteristics. These findings suggest that the relationship between drinking and risky sex is the result of a complex interaction among personality, situational, and behavioral factors.