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. 2007 Jan;97(1):150–156. doi: 10.2105/AJPH.2006.089169

TABLE 2—

Percentages of Sexually Active Young Women Aged 15–19 Years Who Used Selected Contraceptive Methods at Most Recent Sexual Intercourse and Contraceptive Failure Rates Risk Scores: National Survey of Family Growth, 1995 and 2002

15–19 Years 15–17 Years 18–19 Years White Non-Hispanic Black Non-Hispanic Hispanic
Contraceptive Failure Rate 1995 2002 1995 2002 1995 2002 1995 2002 1995 2002 1995 2002
Method, %
    Condom 13.7 35.7 53.0 38.4 58.3 33.7 50.0 38.4 58.0 37.9 52.7 19.6 30.6
    Birth control pill 7.5 23.7 32.5 19.3 38.7 26.8 28.8 28.9 39.7 14.5 24.1 14.1 18.3
    Injection 3.5 7.6 9.9 9.2 9.4 6.4 10.2 5.5 7.9 14.7 19.9 8.4 7.8
    Norplant 3.5 2.2 0.0 1.8 0.0 2.4 0.0 1.4 0.0 3.2 0.0 4.6 0.0
    Withdrawal 24.5 6.7 12.2 6.6 11.5 6.9 12.7 7.7 13.9 2.5 3.6 6.0 8.4
    Rhythm 22.9 0.7 0.9 0.0 0.7 1.2 1.0 0.2 1.3 1.7 0.0 1.3 0.0
    Vasectomy 0.2 0.2 0.0 0.0 0.0 0.3 0.0 0.3 0.0 0.0 0.0 0.0 0.0
    Patch 8.0a 0.0 0.4 0.0 0.0 0.0 0.6 0.0 0.3 0.0 1.0 0.0 0.0
    Intrauterine device 3.5 0.0 0.6 0.0 0.6 0.0 0.6 0.0 0.0 0.0 0.0 0.0 1.5
    Diaphragm 13.1 0.0 0.2 0.0 0.6 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0
    Spermicide 27.6 1.0 0.8 0.0 0.2 0.7 1.1 1.1 1.1 1.0 0.0 0.0 0.0
    No method 85.0a 33.9 18.3 35.4 14.3 32.8 20.7 30.7 12.2 33.3 24.8 50.2 39.6
Sexually active, no. 560 444 228 156 332 288 327 240 135 98 89 84
Common method combinations, %
    Pill + condom 1.0 7.0 14.2 6.1 21.9 7.6 9.7 8.9 17.4 4.8 14.3 0.7 3.0
    Pill + withdrawal 1.8 1.3 2.6 1.1 3.6 1.3 2.0 1.7 4.0 0.0 0.0 1.2 0.0
    Withdrawal + condom 3.4 1.7 3.6 2.0 3.0 1.5 3.9 2.0 4.2 0.0 2.0 2.4 1.4
    Injection + condom 0.5 0.5 3.3 1.1 2.6 0.1 3.7 0.0 2.5 2.6 8.8 0.0 0.7
    Patch + condom 1.1 0.0 0.4 0.0 0.0 0.0 0.6 0.0 0.3 0.0 1.0 0.0 0.0
No. of methods used, %
    0 33.9 18.3 35.4 14.3 32.8 20.7 30.7 12.2 33.3 24.8 50.2 39.6
    ≥1 66.1 81.7 64.6 85.7 67.2 79.3 69.3 87.8 66.7 75.2 49.8 60.4
    ≥2 11.2 26.1 11.5 32.7 10.9 22.2 13.4 30.9 8.8 26.2 4.3 5.0
    ≥3 0.5 2.3 0.5 1.5 0.6 2.7 0.8 3.3 0.0 0.0 0.0 1.1
    4 0.0 0.4 0.0 0.0 0.0 0.6 0.0 0.6 0.0 0.0 0.0 0.0
Contraceptive risk indexb 33.8 22.3 34.4 18.6 33.3 24.4 31.1 17.3 34.0 26.5 45.6 39.5
Change, 1995–2002, % −34.0 −45.9 −26.8 −44.3 −22.1 −13.4
t test 4.74 4.47 2.87 5.05 1.42 0.82
P <.001 <.001 .004 <.001 .158 .413

Note. Typical-use first-year contraceptive failure rates are from Ranjit et al.18 unless otherwise noted.

aFrom Trussell.19

b Weighted-average contraceptive use or nonuse risk score, abbreviated as contraceptive risk index.