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In science, prevalence describes a proportion (typically expressed as a percentage). For example, the prevalence of obesity among American adults in 2001 was estimated by the U. S. Centers for Disease Control (CDC) at approximately 20.9%. [5] Prevalence is a term that means being widespread and it is distinct from incidence.
The word "eclampsia" is from the Greek term for lightning. [20] The first known description of the condition was by Hippocrates in the 5th century BC. [20] An outdated medical term for pre-eclampsia is toxemia of pregnancy, a term that originated in the mistaken belief that the condition was caused by toxins. [21]
A pregnancy is considered term at 37 weeks of gestation. It is preterm if less than 37 weeks and post-term at or beyond 42 weeks of gestation. The American College of Obstetricians and Gynecologists have recommended further division with early term 37 weeks up to 39 weeks, full term 39 weeks up to 41 weeks, and late term 41 weeks up to 42 weeks ...
Prevalence of postterm pregnancy may vary between countries due to different population characteristics or medical management. Factors include number of first-time pregnancies, genetic predisposition, timing of ultrasound assessment, and Caesarean section rates, etc.
The prevalence of antenatal depression differs slightly by region of world. In the United States, antenatal depression is experienced in as many as 16% of pregnant women, while in South Asia it is experienced in as many as 24% of pregnant women. [14] [15] [16] It's becoming more prevalent as more medical studies are being done. Antenatal ...
In the developed world eclampsia rates are about 1 in 2,000 deliveries due to improved medical care whereas in developing countries it can impact 10–30 times as many women. [1] [14] Hypertensive disorders of pregnancy are one of the most common causes of death in pregnancy. [14] They resulted in 46,900 deaths in 2015. [6]
Severe complications of pregnancy, childbirth, and the puerperium are present in 1.6% of mothers in the US, [6] and in 1.5% of mothers in Canada. [7] In the immediate postpartum period (puerperium), 87% to 94% of women report at least one health problem. [8] [9] Long-term health problems (persisting after six months postpartum) are reported by ...
This terminology is preferred over the older but widely used term pregnancy-induced hypertension (PIH) because it is more precise. [10] The newer terminology reflects simply relation of pregnancy with either the onset or first detection of hypertension; the question of causation, while pathogenetically interesting, is not the important point ...