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Miscarriage rates among all fertilized zygotes are around 30% to 50%. [1] [7] [60] [123] A 2012 review found the risk of miscarriage between 5 and 20 weeks from 11% to 22%. [157] Up to the 13th week of pregnancy, the risk of miscarriage each week was around 2%, dropping to 1% in week 14 and reducing slowly between 14 and 20 weeks. [157]
Perinatal mortality (PNM) is the death of a fetus or neonate and is the basis to calculate the perinatal mortality rate. [1] Perinatal means "relating to the period starting a few weeks before birth and including the birth and a few weeks after birth."
List of countries by infant and under-five mortality rates; List of countries by quality of healthcare; List of OECD health expenditure by country by type of financing; List of countries by total health expenditure per capita; Health spending as a percent of GDP by country (gross domestic product)
Maternal death or maternal mortality is defined in slightly different ways by several different health organizations. The World Health Organization (WHO) defines maternal death as the death of a pregnant mother due to complications related to pregnancy, underlying conditions worsened by the pregnancy or management of these conditions.
As many as 25 percent of pregnancies end in miscarriage. About 1 percent of women suffer from three or more in a row, which is the definition of a recurrent miscarriage.
The rate for a given region is the number of children dying under one year of age, divided by the number of live births during the year, multiplied by 1,000. [18] Forms of infant mortality: Perinatal mortality is late fetal death (22 weeks gestation to birth) or death of a newborn up to one week postpartum. [18]
They found that about 50% of patients delivered a live baby. The rates for ectopic pregnancy was 2.7%, for miscarriage 34%, and for preterm delivery 20%, while the intrauterine demise rate was 10%. [2] Thus patients with a unicornuate uterus are at a higher risk for pregnancy loss and obstetrical complications.
It is the most common autosomal trisomy leading to miscarriage, and the second most common chromosomal cause (closely following X-chromosome monosomy). [2] About 6% of miscarriages have trisomy 16. [3] Those mostly occur between 8 and 15 weeks after the last menstrual period. [3]