What types of contraception are temporary?
All of the other known types. These can be divided into mechanical, which includes condoms, diaphragms and intra-uterine devices (IUD), and chemical contraceptives, which include those taken internally and those applied externally. Are drugs like RU 486, methotrexate and prostaglandin contraceptives? No, they are not. They do not prevent fertilization. They do cause very early abortions. See Chapter 19 on early abortions for details. How effective are contraceptives in preventing pregnancy? There are two measurements. Method effectiveness and user effectiveness. Method effectiveness measures the number of times pregnancy occurs when the method is used exactly the way it is supposed to be used. An example of this would be to take a contraceptive pill, without fail, every single day for the 20 days required in a particular month. If, in spite of this, she gets pregnant, that would be a method failure. Let s take a woman, however, who forgets to take one or perhaps two pills during the mo
