TABLE 2.
Association Between NMUPD and Sexual Risk Factors for STI and HIV Infection, US High School Students, Youth Risk Behavior Surveillance System, 2011 to 2013
| Characteristic | Ever Had Sexual Intercourse | Had ≥4 Lifetime Sexual Partners | Currently Sexually Activea | Did Not Use Condom at last Intercourseb | Used Alcohol or Drugs Before Last Sexual Intercourseb | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n (%)c | aPR | 95% CI | n (%)c | aPR | 95% CI | n (%)c | aPR | 95% CI | n (%)c | aPR | 95% CI | n (%)c | aPR | 95% CI | |
| Ever took prescription drugs without a doctor's prescription (NMUPD)d | |||||||||||||||
| No | 9282 (39.9) | — | Referent | 2554 (10.1) | — | Referent | 6410 (27.2) | — | Referent | 2288 (35.8) | — | Referent | 921 (14.0) | — | Referent |
| Yes | 3770 (76.6) | 1.16 | 1.11–1.22 | 1753 (35.8) | 1.45 | 1.34–1.57 | 2976 (61.2) | 1.26 | 1.20–1.33 | 1401 (48.2) | 1.14 | 1.05–1.23 | 1148 (38.0) | 1.32 | 1.17–1.48 |
| Sexe | |||||||||||||||
| Female | |||||||||||||||
| No NMUPD | 4490 (39.0) | — | Referent | 945 (8.2) | — | Referent | 3291 (28.3) | — | Referent | 1426 (42.4) | — | Referent | 425 (12.7) | — | Referent |
| Yes NMUPD | 1687 (75.2) | 1.16 | 1.10–1.23 | 685 (33.7) | 1.60 | 1.41–1.80 | 1358 (61.8) | 1.26 | 1.18–1.35 | 726 (55.4) | 1.11 | 1.00–1.23 | 422 (31.2) | 1.39 | 1.15–1.67 |
| Male | |||||||||||||||
| No NMUPD | 4769 (40.9) | — | Referent | 1598 (12.0) | — | Referent | 3106 (26.0) | — | Referent | 858 (28.3) | — | Referent | 492 (15.4) | — | Referent |
| Yes NMUPD | 2073 (77.9) | 1.17 | 1.09–1.25 | 1063 (37.8) | 1.32 | 1.20–1.45 | 1609 (60.6) | 1.26 | 1.17–1.37 | 669 (41.4) | 1.19 | 1.04–1.36 | 721 (44.4) | 1.27 | 1.12–1.44 |
| Race/ethnicityf | |||||||||||||||
| Whiteg | |||||||||||||||
| No NMUPD | 3128 (35.3) | — | Referent | 653 (7.4) | — | Referent | 2200 (24.7) | — | Referent | 822 (36.3) | — | Referent | 309 (13.8) | — | Referent |
| Yes NMUPD | 1824 (76.5) | 1.21 | 1.13–1.29 | 804 (34.5) | 1.50 | 1.36–1.64 | 1467 (61.7) | 1.31 | 1.23–1.40 | 726 (49.0) | 1.15 | 1.04–1.28 | 530 (35.9) | 1.18 | 1.01–1.38 |
| Blackg | |||||||||||||||
| No NMUPD | 2571 (57.1) | — | Referent | 1011 (21.9) | — | Referent | 1807 (38.5) | — | Referent | 572 (33.2) | — | Referent | 271 (14.8) | — | Referent |
| Yes NMUPD | 543 (81.5) | 1.06 | 0.97–1.17 | 311 (46.2) | 1.16 | 0.98–1.38 | 400 (62.2) | 1.08 | 0.94–1.25 | 147 (41.8) | 1.13 | 0.87–1.47 | 174 (42.0) | 1.50 | 1.24–1.81 |
| Hispanic | |||||||||||||||
| No NMUPD | 2573 (42.4) | — | Referent | 611 (9.3) | — | Referent | 1722 (27.6) | — | Referent | 650 (37.1) | — | Referent | 248 (14.4) | — | Referent |
| Yes NMUPD | 998 (76.0) | 1.10 | 1.02–1.18 | 442 (34.2) | 1.45 | 1.26–1.67 | 801 (61.5) | 1.29 | 1.18–1.39 | 385 (50.6) | 1.12 | 0.97–1.30 | 306 (39.4) | 1.47 | 1.18–1.83 |
a
Had sexual intercourse with ≥1 person during the 3 mo before the survey.
b
Among students who were currently sexually active.
c
Sample n is unweighted; percentage is weighted.
d
Adjusted for sex, race/ethnicity, grade, alcohol, marijuana, cocaine, heroin, methamphetamines, inhalants, ecstasy, and IDU.
e
Adjusted for race/ethnicity, grade, alcohol, marijuana, cocaine, heroin, methamphetamines, inhalants, ecstacy, and IDU.
f
Adjusted for sex, grade, alcohol, marijuana, cocaine, heroin, methamphetamines, inhalants, ecstasy, and IDU.
g
Non-Hispanic.