منابع مشابه
Perinatal mortality by birth order within cohorts based on sibship size.
Cross-sectional surveys of perinatal mortality show a U-shaped curve when plotted against parity, implying that fourth and subsequent babies are at increased risk. Our study of a large, population-based longitudinal data set shows that this result is an artefact and that perinatal mortality falls with increasing parity. Within cohorts of mothers based on attained sibship size the perinatal mort...
متن کاملNeonatal and "perinatal" mortality rates by birth weight.
Neonatal and "perinatal" mortality rates by birth weight were compared for Sheffield and for England and Wales. The fall in neonatal mortality rate for Sheffield infants weighing 2500 g or less was partly due to the excessive fall in numbers in the 1000 g or less group: this effect was also present in England and Wales but was less pronounced. Perinatal mortality rates may be lowered either by ...
متن کاملPerinatal Mortality Rate in Weekend Birth in Japan
Background: It was unknown whether risk of perinatal mortality rate (PMR) was higher in weekend than week days births in Japan and how Japanese obstetricians attempted to reduce numbers of weekend births. Methods and Findings: Retrospective observational study on 301510 women registered in the Japan Society of Obstetrics and Gynecology registry system who gave birth to singleton infants at gest...
متن کاملFactors related to birth weight and perinatal mortality.
)reliable statistical reporting systems for a few countries extending back to World War II show that perinatal mortality rates have continuously fallen. To understand the reasons for this trend, 2 kinds of studies must be distinguished: studies which relate observed perinatal mortality rates or changes in rates to social, demographic, and other factors; and studies which set out "experimental...
متن کاملPerinatal Mortality
Sophisticated peoples have a low fertility and great concern for the welfare of their children. Their low birth rate is due to deliberate family limitation; besides planned parenthood, their desire for better living standards leads to emancipation of women, and later marriages. A century ago in Britain, when conditions of infant life were appalling, no less than 15 out of every 100 live born in...
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ژورنال
عنوان ژورنال: BMJ
سال: 1979
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.2.6198.1147