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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.
Chinese women receive free contraception and family planning services. [12] Greater than 70% of those of childbearing age use contraception. [1] Since the policy was put into place in 1979, over 400 million births have been prevented. [12] Because of various exemptions, fertility rate is about 1.7 children per woman, down from 5.9 in the 1960s.
It needs to be fitted by a medical professional. It has a failure rate of 17%. [1] A contraceptive sponge is another contraceptive method. Like the diaphragm, the contraceptive sponge contains spermicide and is inserted into the vagina and placed over the cervix to prevent sperm from entering the uterus. The sponge must be kept in place 6 hours ...
Quantification of profound developments regarding the prevalence of contraception can be achieved by looking at the contraceptive prevalence rate (CPR). It takes into account all sources of supply and all contraceptive methods. [3] In less than forty years, the CPR increased from 8% in 1975 to 62% in 2014.
Although, across the nine countries, more than 50% of sexually-active participants had used a condom at their last sexual encounter. Over a third used other methods of contraceptive for their last sexual intercourse. The highest rate of contraceptive-use was found in those from Namibia, and the lowest prevalence was found to be in Tanzania. The ...
[105] In Mozambique, despite efforts in improving access to modern contraceptive methods, the general fertility rate is "still high at 5.3 and the unmet need for contraceptives is also high at 26%." Among young women, the fertility rate has dramatically increased from 167 births per 1000 aged between (15–19 years) in 2011 to 194 in 2015 with ...
Modern contraceptives using steroid hormones have perfect-use or method failure rates of less than 1% per year. The lowest failure rates are seen with the implants Jadelle and Implanon, at 0.05% per year. [9] [10] According to Contraceptive Technology, none of these methods has a failure rate greater than 0.3% per year. [10]
9% failure rate with typical use (method not used consistently or correctly) 0.3% failure rate with perfect use [7] [18] Meant to be taken at the same time every day (some pills can be taken within 2–24 hours and still be effective) [19] Combined contraceptive patch [7] 120-150 μg of norelgestromin and 20-35 μg ethinyl estradiol daily [20 ...