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2. Combined hormonal contraception - Wikipedia

   en.wikipedia.org/wiki/Combined_hormonal...

   Combined hormonal contraception (CHC), or combined birth control, is a form of hormonal contraception which combines both an estrogen and a progestogen in varying formulations. [ 1 ] [ 2 ] The different types available include the pill , the patch and the vaginal ring , which are all widely available, [ 3 ] and an injection , which is available ...

3. Pearl Index - Wikipedia

   en.wikipedia.org/wiki/Pearl_Index

   The Pearl Index, also called the Pearl rate, is the most common technique used in clinical trials for reporting the effectiveness of a birth control method. It is a very approximate measure of the number of unintended pregnancies in 100 woman-years of exposure that is simple to calculate, but has a number of methodological deficiencies.

4. Birth control - Wikipedia

   en.wikipedia.org/wiki/Birth_control

   Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent pregnancy. [1] [2] Birth control has been used since ancient times, but effective and safe methods of birth control only became available in the 20th century. [3]

5. Comparison of birth control methods - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_birth...

   Effectiveness of contraceptive methods with respect to birth control. Only condoms are useful to prevent sexually transmitted infections. There are many methods of birth control (or contraception) that vary in requirements, side effects, and effectiveness. As the technology, education, and awareness about contraception has evolved, new ...

6. Male birth control gel is safe and effective, new trial ...

   www.aol.com/news/male-birth-control-gel-safe...

   The couple must agree to use the gel as their only birth control and to have sex at least once a month for a year. Throughout the study, men have their sperm counts tested periodically, which is a ...

7. Birth Control Review - Wikipedia

   en.wikipedia.org/wiki/Birth_Control_Review

   Birth Control Review was a lay magazine established and edited by Margaret Sanger in 1917, three years after her friend, Otto Bobsein, coined the term "birth control" to describe voluntary motherhood or the ability of a woman to space children "in keeping with a family's financial and health resources."