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Pregnancy rate is the success rate for getting pregnant.It is the percentage of all attempts that leads to pregnancy, with attempts generally referring to menstrual cycles where insemination or any artificial equivalent is used, which may be simple artificial insemination (AI) or AI with additional in vitro fertilization (IVF).
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Studies in 2008 and 2013 indicated that Asians (23 per 1,000) and whites (43 per 1,000) have lower rates of pregnancy before the age of 20. [15] [18] Teen birth rates decline by racial groups [8] Teen birth rates declined from 2018 to 2019 for several racial groups and for Hispanics.Among 15- to 19-year-olds, teen birth rates decreased:
In 1998, the government of the UK set a target to halve the under-18 pregnancy rate by 2010. The Teenage Pregnancy Strategy (TPS) was established to achieve this. The pregnancy rate in this group, although falling, rose slightly in 2007, to 41.7 per 1,000 women. [80]
An abnormally slow growth rate results in the infant being small for gestational age, while an abnormally large growth rate results in the infant being large for gestational age. A slow growth rate and preterm birth are the two factors that can cause a low birth weight. Low birth weight (below 2000 grams) can slightly increase the likelihood of ...
Between 2010 and 2014, babies in the United States had an approximately 70% survival rate when born under weight of 500 g (1.10lb), an increase from a 30.8% survival rate between 2006 and 2010. [15] A baby's chances for survival increases 3 to 4 percentage points per day between 23 and 24 weeks of gestation, and about 2 to 3 percentage points ...
The rates of teenage pregnancy may vary widely within a country. For instance, in the United Kingdom, the rate of adolescent pregnancy in 2002 was as high as 100.4 per 1000 among young women living in the London Borough of Lambeth , and as low as 20.2 per 1000 among residents in the Midlands local authority area of Rutland .