| Variable | Year | Supplement |
|---|---|---|
| NBTST12M | 1993 | AIDS knowledge and attitudes |
| NOX12V1 | 1989 | AIDS knowledge and attitudes |
| NTBT12MO | 1988 | AIDS knowledge and attitudes |
| NTP12MO | 1992 | AIDS knowledge and attitudes |
| NTP12MO | 1991 | AIDS knowledge and attitudes |
| NXTEST12 | 1990 | AIDS knowledge and attitudes |
| TSTTYR | 2002 | Sample adult questionnaire |
| TTEST12M | 1995 | AIDS knowledge and attitudes |
| TTEST12M | 1994 | AIDS knowledge and attitudes |