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Family Planning: A Global Handbook for Providers
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APPENDIX A
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Key |
| 0–0.9 |
| Very effective |
| 1–9 |
| Effective |
| 10–25 |
| Moderately effective |
| 26–32 |
| Less effective |
| First-Year Pregnancy Rates (Trussella) | 12-month Pregnancy Rates (Cleland & Alib) | ||
|---|---|---|---|
| Family planning method | Consistent and correct use | As commonly used | As commonly used |
| Implants | 0.05 | 0.05 | |
| Vasectomy | 0.1 | 0.15 | |
| Levonorgestrel IUD | 0.2 | 0.2 | |
| Female sterilization | 0.5 | 0.5 | |
| Copper-bearing IUD | 0.6 | 0.8 | 2 |
| LAM (for 6 months) | 0.9c | 2c | |
| Monthly injectables | 0.05 | 3 | |
| Progestin-only injectables | 0.3 | 3 | 2 |
| Combined oral contraceptives | 0.3 | 8 | 7 |
| Progestin-only oral pills | 0.3 | 8 | |
| Combined patch | 0.3 | 8 | |
| Combined vaginal ring | 0.3 | 8 | |
| Male condoms | 2 | 15 | 10 |
| Ovulation method | 3 | ||
| TwoDay Method | 4 | ||
| Standard Days Method | 5 | ||
| Diaphragms with spermicide | 6 | 16 | |
| Female condoms | 5 | 21 | |
| Other fertility awareness methods | 25 | 24 | |
| Withdrawal | 4 | 27 | 21 |
| Spermicides | 18 | 29 | |
| Cervical caps | 26d, 9e | 32d,16e | |
| No method | 85 | 85 | 85 |
a Rates largely from the United States. Source: Trussell J. Contraceptive efficacy. In: Hatcher R et al., editors. Contraceptive technology. 19th revised ed. 2007 (in press). Rates for monthly injectables and cervical cap are from Trussell J. Contraceptive failure in the United States. Contraception. 2004;70(2): 89—96.
b Rates from developing countries. Source: Cleland J and Ali MM. Reproductive consequences of contraceptive failure in 19 developing countries. Obstetrics and Gynecology. 2004;104(2): 314—320.
c Rate for consistent and correct use of LAM is a weighted average from 4 clinical studies cited in Trussell (2007). Rate for LAM as commonly used is from Kennedy KI et al., Consensus statement: Lactational amenorrhea method for family planning. International Journal of Gynecology and Obstetrics. 1996;54(1): 55—57.
d Pregnancy rate for women who have given birth
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