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. 2016 Jan;137(1):e20152480. doi: 10.1542/peds.2015-2480

TABLE 3.

Association Between Frequency of 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 aPRd 95% CI n (%)c aPRd 95% CI n (%)c aPRd 95% CI n (%)c aPRd 95% CI n (%)c aPRd 95% CI
How often took prescription drugs without a doctor’s prescription
 Never 9282 (39.9) Referent 2554 (10.1) Referent 6410 (27.2) Referent 2288 (35.8) Referent 921 (14.0) Referent
 1–2 times 1202 (66.0) 1.10 1.04–1.16 422 (23.4) 1.27 1.14–1.41 909 (51.4) 1.21 1.14–1.28 381 (42.4) 1.08 0.96–1.21 248 (26.7) 1.20 1.03–1.40
 3–19 times 1584 (78.9) 1.19 1.11–1.28 729 (36.3) 1.50 1.35–1.67 1266 (63.3) 1.30 1.20–1.41 568 (46.5) 1.13 1.00–1.27 477 (37.2) 1.33 1.15–1.53
 ≥20 times 984 (88.4) 1.33 1.23–1.44 602 (53.4) 1.80 1.60–2.03 801 (72.1) 1.32 1.20–1.46 452 (57.0) 1.30 1.16–1.47 423 (51.2) 1.55 1.31–1.83

For all categories, P for trend <.0001.

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 level, alcohol, marijuana, cocaine, heroin, methamphetamines, inhalants, ecstasy, and IDU.