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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.
The unintended pregnancy rate among teens has been declining in the US. Between 2008 and 2011, the unintended pregnancy rate declined 44% among women aged 15–17 years old and 20% among women aged 18–19 years old. [34] This decline is attributed to improved contraceptive use among sexually active teens, rather than changes in sexual activity ...
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]
When used to avoid pregnancy, the standard days method has been estimated [22] to have perfect-use efficacy of 95% and typical-use efficacy of 88%. [ 20 ] [ 21 ] These figures are based on a 2002 study in Bolivia, Peru, and the Philippines of women of reproductive age having menstrual cycles between 26 and 32 days, [ 20 ] [ 23 ] : 505 and on a ...
In regard to the use of modern methods of contraception, The United Nations Population Fund (UNFPA) says, "Contraceptives prevent unintended pregnancies, reduce the number of abortions, and lower the incidence of death and disability related to complications of pregnancy and childbirth."
Emergency contraception (EC) is a birth control measure, used after sexual intercourse to prevent pregnancy.. There are different forms of EC. Emergency contraceptive pills (ECPs), sometimes simply referred to as emergency contraceptives (ECs), or the morning-after pill, are medications intended to disrupt or delay ovulation or fertilization, which are necessary for pregnancy.
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Reproductive coercion and unintended pregnancy are strongly associated, and this association is stronger in individuals who have experienced intimate partner violence. [1] While research remains fragmentary, women in abusive relationships are at higher risk of reproductive coercion and unintended pregnancies. [8]