Effectiveness of Long-Acting Reversible Contraception
This study involved women at high risk for unintended pregnancy who received free contraception. Long-acting reversible contraception was associated with a significantly lower risk of pregnancy than contraceptive pills, patch, or ring and was highly effective regardless of age. Unintended pregnancy...
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| Vydáno v: | The New England journal of medicine Ročník 366; číslo 21; s. 1998 - 2007 |
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| Hlavní autoři: | , , , , , , |
| Médium: | Journal Article |
| Jazyk: | angličtina |
| Vydáno: |
Waltham, MA
Massachusetts Medical Society
24.05.2012
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| Témata: | |
| ISSN: | 0028-4793, 1533-4406, 1533-4406 |
| On-line přístup: | Získat plný text |
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| Abstract | This study involved women at high risk for unintended pregnancy who received free contraception. Long-acting reversible contraception was associated with a significantly lower risk of pregnancy than contraceptive pills, patch, or ring and was highly effective regardless of age.
Unintended pregnancy is a major problem in the United States. Approximately 3 million pregnancies per year — 50% of all pregnancies — are unintended, and this rate is significantly higher than that in other developed countries.
1
Unintended pregnancy in the United States results in 1.2 million abortions per year,
2
has negative effects on women's health and education and the health of newborns, and imposes a considerable personal burden as well as a financial burden on families and society.
3
Approximately half of unintended pregnancies result from contraceptive failure, usually owing to incorrect or inconsistent use of contraception, and the remainder are . . . |
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| AbstractList | The rate of unintended pregnancy in the United States is much higher than in other developed nations. Approximately half of unintended pregnancies are due to contraceptive failure, largely owing to inconsistent or incorrect use.
We designed a large prospective cohort study to promote the use of long-acting reversible contraceptive methods as a means of reducing unintended pregnancies in our region. Participants were provided with reversible contraception of their choice at no cost. We compared the rate of failure of long-acting reversible contraception (intrauterine devices [IUDs] and implants) with other commonly prescribed contraceptive methods (oral contraceptive pills, transdermal patch, contraceptive vaginal ring, and depot medroxyprogesterone acetate [DMPA] injection) in the overall cohort and in groups stratified according to age (less than 21 years of age vs. 21 years or older).
Among the 7486 participants included in this analysis, we identified 334 unintended pregnancies. The contraceptive failure rate among participants using pills, patch, or ring was 4.55 per 100 participant-years, as compared with 0.27 among participants using long-acting reversible contraception (hazard ratio after adjustment for age, educational level, and history with respect to unintended pregnancy, 21.8; 95% confidence interval, 13.7 to 34.9). Among participants who used pills, patch, or ring, those who were less than 21 years of age had a risk of unintended pregnancy that was almost twice as high as the risk among older participants. Rates of unintended pregnancy were similarly low among participants using DMPA injection and those using an IUD or implant, regardless of age.
The effectiveness of long-acting reversible contraception is superior to that of contraceptive pills, patch, or ring and is not altered in adolescents and young women. (Funded by the Susan Thompson Buffet Foundation.). The rate of unintended pregnancy in the United States is much higher than in other developed nations. Approximately half of unintended pregnancies are due to contraceptive failure, largely owing to inconsistent or incorrect use.BACKGROUNDThe rate of unintended pregnancy in the United States is much higher than in other developed nations. Approximately half of unintended pregnancies are due to contraceptive failure, largely owing to inconsistent or incorrect use.We designed a large prospective cohort study to promote the use of long-acting reversible contraceptive methods as a means of reducing unintended pregnancies in our region. Participants were provided with reversible contraception of their choice at no cost. We compared the rate of failure of long-acting reversible contraception (intrauterine devices [IUDs] and implants) with other commonly prescribed contraceptive methods (oral contraceptive pills, transdermal patch, contraceptive vaginal ring, and depot medroxyprogesterone acetate [DMPA] injection) in the overall cohort and in groups stratified according to age (less than 21 years of age vs. 21 years or older).METHODSWe designed a large prospective cohort study to promote the use of long-acting reversible contraceptive methods as a means of reducing unintended pregnancies in our region. Participants were provided with reversible contraception of their choice at no cost. We compared the rate of failure of long-acting reversible contraception (intrauterine devices [IUDs] and implants) with other commonly prescribed contraceptive methods (oral contraceptive pills, transdermal patch, contraceptive vaginal ring, and depot medroxyprogesterone acetate [DMPA] injection) in the overall cohort and in groups stratified according to age (less than 21 years of age vs. 21 years or older).Among the 7486 participants included in this analysis, we identified 334 unintended pregnancies. The contraceptive failure rate among participants using pills, patch, or ring was 4.55 per 100 participant-years, as compared with 0.27 among participants using long-acting reversible contraception (hazard ratio after adjustment for age, educational level, and history with respect to unintended pregnancy, 21.8; 95% confidence interval, 13.7 to 34.9). Among participants who used pills, patch, or ring, those who were less than 21 years of age had a risk of unintended pregnancy that was almost twice as high as the risk among older participants. Rates of unintended pregnancy were similarly low among participants using DMPA injection and those using an IUD or implant, regardless of age.RESULTSAmong the 7486 participants included in this analysis, we identified 334 unintended pregnancies. The contraceptive failure rate among participants using pills, patch, or ring was 4.55 per 100 participant-years, as compared with 0.27 among participants using long-acting reversible contraception (hazard ratio after adjustment for age, educational level, and history with respect to unintended pregnancy, 21.8; 95% confidence interval, 13.7 to 34.9). Among participants who used pills, patch, or ring, those who were less than 21 years of age had a risk of unintended pregnancy that was almost twice as high as the risk among older participants. Rates of unintended pregnancy were similarly low among participants using DMPA injection and those using an IUD or implant, regardless of age.The effectiveness of long-acting reversible contraception is superior to that of contraceptive pills, patch, or ring and is not altered in adolescents and young women. (Funded by the Susan Thompson Buffet Foundation.).CONCLUSIONSThe effectiveness of long-acting reversible contraception is superior to that of contraceptive pills, patch, or ring and is not altered in adolescents and young women. (Funded by the Susan Thompson Buffet Foundation.). This study involved women at high risk for unintended pregnancy who received free contraception. Long-acting reversible contraception was associated with a significantly lower risk of pregnancy than contraceptive pills, patch, or ring and was highly effective regardless of age. Unintended pregnancy is a major problem in the United States. Approximately 3 million pregnancies per year — 50% of all pregnancies — are unintended, and this rate is significantly higher than that in other developed countries. 1 Unintended pregnancy in the United States results in 1.2 million abortions per year, 2 has negative effects on women's health and education and the health of newborns, and imposes a considerable personal burden as well as a financial burden on families and society. 3 Approximately half of unintended pregnancies result from contraceptive failure, usually owing to incorrect or inconsistent use of contraception, and the remainder are . . . BackgroundThe rate of unintended pregnancy in the United States is much higher than in other developed nations. Approximately half of unintended pregnancies are due to contraceptive failure, largely owing to inconsistent or incorrect use.MethodsWe designed a large prospective cohort study to promote the use of long-acting reversible contraceptive methods as a means of reducing unintended pregnancies in our region. Participants were provided with reversible contraception of their choice at no cost. We compared the rate of failure of long-acting reversible contraception (intrauterine devices [IUDs] and implants) with other commonly prescribed contraceptive methods (oral contraceptive pills, transdermal patch, contraceptive vaginal ring, and depot medroxyprogesterone acetate [DMPA] injection) in the overall cohort and in groups stratified according to age (less than 21 years of age vs. 21 years or older).ResultsAmong the 7486 participants included in this analysis, we identified 334 unintended pregnancies. The contraceptive failure rate among participants using pills, patch, or ring was 4.55 per 100 participant-years, as compared with 0.27 among participants using long-acting reversible contraception (hazard ratio after adjustment for age, educational level, and history with respect to unintended pregnancy, 21.8; 95% confidence interval, 13.7 to 34.9). Among participants who used pills, patch, or ring, those who were less than 21 years of age had a risk of unintended pregnancy that was almost twice as high as the risk among older participants. Rates of unintended pregnancy were similarly low among participants using DMPA injection and those using an IUD or implant, regardless of age.ConclusionsThe effectiveness of long-acting reversible contraception is superior to that of contraceptive pills, patch, or ring and is not altered in adolescents and young women. (Funded by the Susan Thompson Buffet Foundation.) |
| Author | Winner, Brooke Peipert, Jeffrey F Madden, Tessa Zhao, Qiuhong Allsworth, Jenifer E Secura, Gina M Buckel, Christina |
| Author_xml | – sequence: 1 givenname: Brooke surname: Winner fullname: Winner, Brooke organization: From the Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis – sequence: 2 givenname: Jeffrey F surname: Peipert fullname: Peipert, Jeffrey F organization: From the Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis – sequence: 3 givenname: Qiuhong surname: Zhao fullname: Zhao, Qiuhong organization: From the Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis – sequence: 4 givenname: Christina surname: Buckel fullname: Buckel, Christina organization: From the Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis – sequence: 5 givenname: Tessa surname: Madden fullname: Madden, Tessa organization: From the Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis – sequence: 6 givenname: Jenifer E surname: Allsworth fullname: Allsworth, Jenifer E organization: From the Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis – sequence: 7 givenname: Gina M surname: Secura fullname: Secura, Gina M organization: From the Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis |
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| References | Kost, K, Singh, S, Vaughan, B, Trussell, J, Bankole, A (r004) 2008; 77 Finer, LB, Henshaw, SK (r005) 2006; 38 Ventura, SJ, Abma, JC, Mosher, WD, Henshaw, SK (r002) 2009; 58 Peipert, JF, Zhao, Q, Allsworth, JE (r010) 2011; 117 Bajos, N, Leridon, H, Goulard, H, Oustry, P, Job-Spira, N (r012) 2003; 18 (r011) 2007; 110 Fu, H, Darroch, JE, Haas, T, Ranjit, N (r008) 1999; 31 (r015) 2010; 59 r009 r013 r003 Mosher, WD, Jones, J (r007) 2010; 29 Woods, JL, Shew, ML, Tu, W, Ofner, S, Ott, MA, Fortenberry, JD (r019) 2006; 39 Frost, JJ, Darroch, JE, Remez, L (r006) 2008; 1 Farley, TM, Rosenberg, MJ, Rowe, PJ, Chen, JH, Meirik, O (r016) 1992; 339 Finer, LB, Zolna, MR (r001) 2011; 84 Cleland, K, Peipert, JF, Westhoff, C, Spear, S, Trussell, J (r014) 2011; 364 Mansour, D, Korver, T, Marintcheva-Petrova, M, Fraser, IS (r018) 2008; 13 Davis, AJ (r017) 2011; 23 Mosher WD (r007) 2010; 29 Frost JJ (r006) 2008; 1 r010 r011 r001 r012 Ventura SJ (r002) 2009; 58 r017 r018 r008 r019 r014 r004 r005 r016 23217071 - J Midwifery Womens Health. 2012 Nov-Dec;57(6):636-7 |
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