Table 2.
Self-reported sexual behavior and risk by ATN groups enrolled between May 2017 and March 2021
| Youth at risk for HIV in ATN studies | Youth Living with HIV in ATN studies | |
|---|---|---|
| Measure | N=3185 n (%)a |
N=542 n (%)a |
|
| ||
| Ever had sex | ||
| Yes | 2489 (97.6) | 507 (93.5) |
| No | 52 (2.0) | 26 (4.8) |
| Missing | 8 (0.3) | 9 (1.7) |
| Not collected by study protocol | 636 | 0 |
| Age at first time sex, mean (SD) | 16.0 (2.63) | 15.4 (2.29) |
| Missingb | 90 (4.0) | 21 (6.1) |
| Did not report ever having sex | 40 | 10 |
| Not collected by study protocol | 881 | 186 |
| Who had sex with in lifetime | ||
| Females | 311 (14.5)c | 18 (5.2)d |
| Males | 1041 (48.7)e | 185 (53.5)f |
| Females and males | 667 (31.2)c,e | 126 (36.4)d,f |
| Another response | 25 (1.2)g | 3 (0.9)h |
| Missing | 95 (4.4) | 14 (4.0) |
| Did not report ever having sex | 60 | 10 |
| Not collected by study protocol | 986 | 186 |
| Female sex partners in lifetime among those with female partners ever, mean (SD) | 14.0 (56.00) | 7.2 (25.41) |
| Median (95% CI) | 5 (2,5) | 3 (2,3)i |
| Missingj | 75 (4.5) | 5 (1.7) |
| Did not report ever having sex with female partner | 525 | 54 |
| Not collected by study protocol | 986 | 186 |
| Female sex partners in past 3 to 4 months, mean (SD) k,l | 2.3 (1.90) | 0.4 (1.42) |
| Median (95% CI) | 1 (0,1) | 0 (0,1) |
| Missingj | 16 (1.4) | 3 (2.1) |
| Not applicable due to survey logic | 1325 | 225 |
| Not collected by study protocol | 701 | 173 |
| Male sex partners in lifetime among those with male partners ever, mean (SD) | 21.3 (74.46) | 42.5 (92.95) |
| Median (95% CI) | 7 (6,7) | 14 (10,23)i |
| Missingj | 122 (5.7) | 30 (8.5) |
| Did not report ever having sex with male partner | 66 | 4 |
| Not collected by study protocol | 986 | 186 |
| Male sex partners in past 3 to 4 months, mean (SD) k,l | 3.2 (7.24) | 5.1 (11.47) |
| Median (95% CI) | 2 (2,2) | 2 (2,3) |
| Missingj | 33 (1.5) | 5 (1.4) |
| Not applicable due to survey logic | 529 | 23 |
| Not collected by study protocol | 416 | 173 |
| Transgender female sex partners in lifetime among those with transgender female partners ever, mean (SD) | 1.5 (0.94) | — |
| Missing | 1 (2.7) | — |
| Did not report ever having sex with transgender female partner | 577 | — |
| Not collected by study protocol | 2571 | — |
| Transgender female sex partners in past 3 months, mean (SD) | 0.6 (1.09) | — |
| Not applicable due to survey logic | 758 | — |
| Not collected by study protocol | 2318 | — |
| Transgender male sex partners in lifetime among those with transgender male partners ever, mean (SD) | 2.0 (1.87) | — |
| Missing | 1 (1.3) | — |
| Did not report ever having sex with transgender male partner | 537 | — |
| Not collected by study protocol | 2571 | — |
| Transgender male sex partners in past 3 months, mean (SD) | 0.5 (0.89) | — |
| Missing | 1 (0.7) | — |
| Not applicable due to survey logic | 654 | — |
| Not collected by study protocol | 2397 | — |
| Substance use before last sexual intercourse k | ||
| Yes | 928 (38.7) | 162 (46.8) |
| No | 1452 (60.5) | 184 (53.2) |
| Missing | 21 (0.9) | 0 (0.0) |
| Not applicable due to survey logic | 77 | 10 |
| Not collected by study protocol | 707 | 186 |
| Sex without condom in lifetime among those who reported ever having sex | ||
| Yes | 1157 (74.5) | 287 (82.2) |
| No | 286 (18.4) | 42 (12.0) |
| Missing | 111 (7.1) | 20 (5.7) |
| Did not report ever having sex | 31 | 7 |
| Not collected by study protocol | 1600 | 186 |
| Sex without condom in past 3 to 4 months, HIV negative partner k, l | — | |
| Yes | 246 (68.3) | — |
| No | 112 (31.1) | — |
| Missing | 2 (0.6) | — |
| Not applicable due to survey logic | 66 | — |
| Not collected by study protocol | 2759 | — |
| Sex without condom in past 3 to 4 months, HIV unknown partner k, l | — | |
| Yes | 168 (42.0) | — |
| No | 227 (56.8) | — |
| Missing | 5 (1.3) | — |
| Not applicable due to survey logic | 66 | — |
| Not collected by study protocol | 2719 | — |
| Sex without condom in past 3 to 4 months, HIV Positive partner k, l | ||
| Yes | 65 (3.6) | 82 (24.8) |
| No | 1709 (95.5) | 245 (74.0) |
| Missing | 16 (0.9) | 4 (1.2) |
| Not applicable due to survey logic | 123 | 25 |
| Not collected by study protocol | 1272 | 186 |
Except where noted otherwise
Includes missing and responses less than 9. Responses less than 9 were recoded to missing, as these do not reflect age of first consensual sex.
Includes responses ‘Females’ and ‘Cisgender Women (female sex at birth)’.
Includes responses ‘Females’ and ‘Females (including nonbinary partners who have vaginas)’.
Includes responses ‘Males’ and ‘Cisgender Men (male sex at birth)’.
Includes responses ‘Males’ and ‘Males (including nonbinary partners who have penises)’.
Includes participants who did not indicate “Females”, “Cisgender Women”, “Males”, “Cisgender Men”, “Females and Males”, or “Cisgender Women and Cisgender Men”, but who did indicate “Transgender Women”, “Transgender Men”, “Transgender partners”, “Non-binary individuals”, or “People who identify their gender in some other way”.
Includes participants who did not indicate “females”, “males”, or “females and males”, but who did indicate “transgender partners”.
Three studies that focused on YLWH contributed median data. We are reporting the median (min, max) of the three observed study-specific medians.
Includes responses ‘Don’t Know’ and ‘Missing’.
Survey logic that determined whether this question was presented differed across studies.
One study (focused on at-risk youth) reported this variable for casual partners specifically.