contraception

• Understand the mechanism of action of current contraceptive methods.
• Describe factors that affect contraceptive effectiveness.
• Understand the non-contraceptive benefits of methods.
• Remember the use of medical eligibility criteria for contraception.
The ideal form of contraception would be 100% effective, completely reversible, totally acceptable & absolutely free of side effects.
No such method exists.
Assessment of effectiveness by Pearl index: is the number of unwanted pregnancies which occur in 100 women using that method for a year.
Method typical use perfect use
1. no method 85 85
2.fertility-awareness 24 0.4-0.5
3.male condom 18 2
4. diaphragm 12 6
5. progesterone-only pill 9 0.3
6. combined hormonal contraception 9 0.3
7.progesterone-only injectable 6 0.2
8.copper IUD 0.8 0.6
9.LNG-IUS 0.2 0.2