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

CharacteristicEver Had Sexual IntercourseHad ≥4 Lifetime Sexual PartnersCurrently Sexually ActiveaDid Not Use Condom at last IntercoursebUsed Alcohol or Drugs Before Last Sexual Intercourseb
n (%)caPR95% CIn (%)caPR95% CIn (%)caPR95% CIn (%)caPR95% CIn (%)caPR95% CI
Ever took prescription drugs without a doctor's prescription (NMUPD)d
 No9282 (39.9)Referent2554 (10.1)Referent6410 (27.2)Referent2288 (35.8)Referent921 (14.0)Referent
 Yes3770 (76.6)1.161.11–1.221753 (35.8)1.451.34–1.572976 (61.2)1.261.20–1.331401 (48.2)1.141.05–1.231148 (38.0)1.321.17–1.48
Sexe
 Female
  No NMUPD4490 (39.0)Referent945 (8.2)Referent3291 (28.3)Referent1426 (42.4)Referent425 (12.7)Referent
  Yes NMUPD1687 (75.2)1.161.10–1.23685 (33.7)1.601.41–1.801358 (61.8)1.261.18–1.35726 (55.4)1.111.00–1.23422 (31.2)1.391.15–1.67
 Male
  No NMUPD4769 (40.9)Referent1598 (12.0)Referent3106 (26.0)Referent858 (28.3)Referent492 (15.4)Referent
  Yes NMUPD2073 (77.9)1.171.09–1.251063 (37.8)1.321.20–1.451609 (60.6)1.261.17–1.37669 (41.4)1.191.04–1.36721 (44.4)1.271.12–1.44
Race/ethnicityf
 Whiteg
  No NMUPD3128 (35.3)Referent653 (7.4)Referent2200 (24.7)Referent822 (36.3)Referent309 (13.8)Referent
  Yes NMUPD1824 (76.5)1.211.13–1.29804 (34.5)1.501.36–1.641467 (61.7)1.311.23–1.40726 (49.0)1.151.04–1.28530 (35.9)1.181.01–1.38
 Blackg
  No NMUPD2571 (57.1)Referent1011 (21.9)Referent1807 (38.5)Referent572 (33.2)Referent271 (14.8)Referent
  Yes NMUPD543 (81.5)1.060.97–1.17311 (46.2)1.160.98–1.38400 (62.2)1.080.94–1.25147 (41.8)1.130.87–1.47174 (42.0)1.501.24–1.81
 Hispanic
  No NMUPD2573 (42.4)Referent611 (9.3)Referent1722 (27.6)Referent650 (37.1)Referent248 (14.4)Referent
  Yes NMUPD998 (76.0)1.101.02–1.18442 (34.2)1.451.26–1.67801 (61.5)1.291.18–1.39385 (50.6)1.120.97–1.30306 (39.4)1.471.18–1.83
  • 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.