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Evid Based Nurs 6:13 doi:10.1136/ebn.6.1.13
  • Treatment

Review: primary prevention strategies do not delay initiation of intercourse, improve contraceptive use, or reduce pregnancies in adolescent women

Primary prevention strategy v control (alternate intervention or nothing) for adolescents*

Weighted event rates
Outcomes Number of trials Primary prevention Control Pooled odds ratio (OR) (95% CI)†
*Abbreviations defined in glossary. Weighted event rates provided by author. Follow up ranged from 2–54 months. †For intercourse and pregnancy outcomes, OR <1.0 favours intervention; for contraception outcomes, OR >1 favours intervention. ‡Significant heterogeneity among trials. §Statistically significant.
Women
Delayed initiation of intercourse 13 (n=9642) 22% 20% 1.12 (0.96 to 1.30)
Used contraception at every intercourse 8 (n=1967) 45% 44% 0.95 (0.69 to 1.30)
Used contraception at last intercourse 5 (n=799) 50% 46% 1.05 (0.50 to 2.19)‡
Pregnancy 12 (n=8019) 4.4% 4.8% 1.04 (0.78 to 1.40)
Men
Delayed initiation of intercourse 11 (n=7418) 29% 30% 0.99 (0.84 to 1.16)
Used contraception at every intercourse 3 (n=1505) 36% 38% 0.90 (0.70 to 1.16)
Used contraception at last intercourse 4 (n=1262) 69% 64% 1.25 (0.99 to 1.59)
Pregnancy in partners 5 (n=3759) 3.4% 2.4% 1.54 (1.03 to 2.29)§

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