The National AIDS Behavioral Surveys (NABS) were designed to identify AIDS-relevant risk behaviors and their correlates in a population based sample of adults aged 18-75 residing in the contiguous United States. The overall study design allows for the description of sexual practices, drug use, HIV antibody test seeking, and levels of AIDS-related knowledge, beliefs and social skills over the adult life-span both for the U.S. as a whole and for the major high AIDS prevalence areas. Emphasis was placed on oversampling black and Hispanic populations with the major AIDS epicenters. The specific aims of the survey included:

The National AIDS Behavioral Survey II (NABS II) is a telephone survey conducted as a follow-up to the National AIDS Behavioral Surveys I conducted in 1990-91. NABS II has the following specific aims: 1) Estimate changes from 1990/91 to 1992 in AIDS relevant sexual practices (number of sexual partners, unprotected vaginal/anal intercourse, condom use), HIV antibody test-seeking, injection drug use, and AIDS-relevant beliefs and social skills across gender and racial/ethnic groups in a national sample. 2) Estimate the extent to which various subgroups in the population mix sexually and thus are capable of spreading HIV or other sexually transmitted diseases out of established risk groups; such subgroups are defined by age, race/ethnicity, gender, sexual orientation, marital status, level of education, and geographic proximity. 3) Test the predictive power of the AIDS Risk Reduction Model (ARRM) in a longitudinal design. The dataset consists of 5,391 cases and 315 variables.