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Multilingual Demographic Dictionary, second unified edition, English volume
Intra-uterine mortality tables
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The proportion of late foetal deaths (411-5) among all births is called a late foetal mortality rate 1. The ratio of late foetal deaths to live births (601-4) is called a late foetal mortality ratio 2. A foetal mortality rate 3 represents the number of known intra-uterine deaths per one thousand births in the same year while the foetal mortality ratio 4 is the ratio of intra-uterine deaths to live births in a given year. These indices greatly understate intra-uterine mortality since early intra-uterine deaths frequently remain unobserved or unknown. A better measurement of intra-uterine mortality is provided by intra-uterine mortality tables 5, a specialized application of the life table (cf. 432) which takes into account the duration of gestation. The perinatal mortality rate 6 relates perinatal deaths (411-6*) to the sum of late foetal deaths and live births. The foeto-infant death rate 7★ represents the number of known stillbirths and deaths in the first year of life per one thousand live births and stillbirths of the same reporting period.
- 1. Also called stillbirth rate. This usage is not recommended.
- 2. Also called stillbirth ratio. This usage is not recommended.
- 6. The perinatal mortality ratio relates perinatal deaths to live births only.
