Contraception (Birth Control) and Family Planning PubHealthInfo

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PubHealth.info® (a subsidiary of PakMed) presents scientific information mainly based on abstracts of articles published on a variety of public health issues/topics, particularly encompassing population planning, disease prevention, maternal and child health, and communicable and non-communicable diseases (like HIV AIDS, malaria, etc) that are affecting a significant portion of population in developing and developed countries. Here you can find abstracts of articles published on a variety of public health topics under category "Contraception (Birth Control) and Family Planning". Contraception (birth control) is a regimen of one or more actions, devices, or medications followed in order to deliberately prevent or reduce the likelihood of a woman becoming pregnant or giving birth. Therefore contraception is the utilization of various and sundry surgical procedures, devices, practices, agents, or drugs with the intention of preventing conception or impregnation (pregnancy). Methods and intentions typically termed birth control may be considered a pivotal ingredient to family planning. Birth control is a controversial political and ethical issue in many cultures and religions, and although it is generally less controversial than abortion specifically.

YEAR: 1968

CATEGORY: Contraception (Birth Control) and Family Planning

TITLE

Essay on the calculation of the effectiveness of contraception. [Essai de

calcul de l'efficacite de la contraception.]

AUTHORS

Henry L

SOURCE

Population (INED) 23(2): 265-278. 1968.

ABSTRACT

Methods of calculating the effectiveness of contraception include efficacy, the Pearl index (R = undesired

pregnancies x 1200 + months of exposure) and residual fertility (r = reciprocal of R) or probability of a married woman

conceiving in 1 menstrual cycle. The advantage of the Pearl index is that it takes duration of exposure into account.

Natural fertility, however, varies with duration of exposure, even im married women. For example, natural fertility in the

postpartum is poorly defined. The improved Pearl index uses a 12-month time period as a reference. Another bias is

the observation that, even using the same contraceptive method, a couple will have the highest failure rate while

they are postponing their 1st pregnancy, better success if they are spacing births, and superior success after the

birth of their last desired child. For example, effectiveness of traditional methods can approach 99%. This explains

why couples can use rather ineffective methods and still not surpass their desired family size. (PubHealth.info

Document ID: CONT9T 1014-06)

PubHealth.info NOTE: The author(s) of this article titled, "Essay on the calculation of the effectiveness of

contraception. [Essai de calcul de l'efficacite de la contraception.]", is(are) Henry L. The source of this article is

"Population (INED) 23(2): 265-278. 1968.". This article was published in 1968 in French language(s).

(PubHealth.info® Document ID: CONT9T 1014-06. All rights reserved with PubHealth.info) PIN: 41014

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