Clues on Contraception
Wednesday, June 23, 2010
Interesting Facts found from Journal Articles..
After reading multiple journal articles concerning contraception, I've come up with quite a few interesting facts...
- An accurate understanding of pregnancy risk results in the highest rate of effectiveness (Steiner, 2006).
- The most common reason that women discontinue birth control use is because of adverse side effects (Brunner Huber, 2006).
- After discontinuing one form of contraception, it is common for women to either cease contraceptive use all together, or switch to a less effective method of birth control. This change results in higher pregnancy rates. (Brunner Huber, 2006).
- Students involved in a study concerning their knowledge and expectations for long-term contraceptives were shown to have “faulty understanding” of the effectiveness of different contraceptives (Shaklee, 2006).
- Some forms of birth control are more expensive, but last for a longer period of time than other, cheaper options. The three least expensive options for birth control were an intrauterine device, vasectomy, and intrauterine system, in that order (Trussell, 2009).
- The U.S.’s “Healthy People 2010” initiative specifies that injectable and oral contraceptives remain the most effective reversible methods (Kost et. Al, 2008).
References
Brunner Huber, L. R., Hogue, C. J., Stein, A. D., Drews, C., Zieman, M., et al. (2006). Contraceptive use and discontinuation: Findings from the contraceptive history, initiation, and choice study. American Journal of Obstetrics and Gynecology, 194(5), 1290-1295.
Kost, K., Singh, S., Vaughan, B., Trussell, J., & Bankole, A. (2008). Estimates of contraceptive failure from the 2002 National Survey of Family Growth. Contraception, 77(1), 10-21.
Shaklee, H. & Fischhoff, B. (2006). The Psychology of Contraceptive Surprises: Cumulative Risk and Contraceptive Effectiveness. Journal of Applied Social Psychology, 20(5), 385-403.
Steiner, M. J., Trussell, J., Mehta, N., Condon, S., Subramaniam, S., et al. (2006). Communicating contraceptive effectiveness: A randomized controlled trial to inform a World Health Organization family planning handbook. American Journal of Obstetrics and Gynecology, 195(1), 85-96.
Monday, June 21, 2010
"The Pill" and other Hormonal Contraceptives
| Hormonal Methods | |||
| • Birth control pills (Oral contraceptive pills - BCP's/OCP's) Options include: -- 20–35-mcg combined pills -- Regular or extended-cycle use pills -- Pills with shortened pill-free interval option -- Progestin-only ‘mini-pills' | 95–99% | No | Pros: |
| • Vaginal ring (NuvaRing) | ~99% | No | Pros/Cons: Same as w/BCP's, above Other advantages: Privacy Use allows for more normal vaginal moisture and flora, reducing yeast infections for some women Protection from pregnancy one month at a time Other disadvantages: Contraindicated with certain pelvic conditions,e.g., prolapse, endometriosis, susceptibility to irritation, etc. |
• Transdermal birth control patch (Ortho Evra) | ~99% (less reliable for women >198 lb) | No | Pros/Cons: Similar to those of BCP's, as above, except exposure to synthetic estrogen is ~60% higher, with resultant higher risk profile for thromboembolic events |
| • Depo-Provera injection | 99.7% | No | Pros/Cons: |
| • Contraceptive implants | 99% | Pros: Longevity: Different systems last from 3-5 yr Fertility returns relatively quickly Cons: Can be difficult to remove Potential for scarring Side effects can in some cases be significant and long-lasting | |
As far as hormonal methods go, I read an article that focuses on the skin patch, vaginal ring, or oral contraceptives. The article concluded that patch users were the most likely of the three to discontinue use (Lopez, 2010). Furthermore, The most consistent method of the three was the patch (for those who did not discontinue use). It seems that the most adverse effects came from using the patch, while the least amount of adverse effects resulted in use of the vaginal ring (Lopez, 2010).
Thursday, June 17, 2010
Does it matter which contraceptive I use?
Wednesday, June 16, 2010
Barrier Methods: Alternatives to Condoms Exist?
- Barrier methods
- Hormonal Methods
- Intra-uterine Devices
- Sterilization
- Spermicidal Methods
- Fertility Awareness Methods
| Method | Reliability | Protection against HIV/STI's? | Pros & Cons |
| Barrier Methods | |||
| • Male condom | 87–98% | Yes, except for STI's contracted from genital areas not covered* | Pros: Convenience and availability Multiple options Inexpensive Allows greater male partner participation Cons: Reduced spontaneity Reduced sensation Some users experience allergies |
| • Female condom | 79–95% | Yes; only abstinence provides better protection* | Pros: Can be placed up to 8 hr in advance Good protection against STI’s Does not require fitting by health care practitioner Cons: Only 1 style currently available More costly than male condoms |
| • Female cervical cap | Varies: 68–91% | No | Pros: Can be inserted up to 6 hr in advance Very few side effects Several designs on market Cons: Relatively low efficacy,* especially in women who have given birth Some types require fitting by health care practitioner; limited to 4 sizes Not widely available Some users experience allergies |