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Perinatal Statistics of Registry Hospitals of Japan in 1974 to 1978 by The Committee on Perinatal Statistics of the Japan Society of Obstetrics and Gynecology
Author(s) -
Sakamoto Chairman S.,
Maeda Cochairman K.
Publication year - 1981
Publication title -
asia‐oceania journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 50
eISSN - 1447-0756
pISSN - 0389-2328
DOI - 10.1111/j.1447-0756.1981.tb00512.x
Subject(s) - perinatal mortality , medicine , respiratory distress , obstetrics , placenta previa , obstetrics and gynaecology , infant mortality , pediatrics , pregnancy , placenta , population , fetus , environmental health , genetics , anesthesia , biology
Annual reports of perinatal statistics in Japan from about 200 registry hospitals are summarized. A gradual decrease in the perinatal mortality rate has been observed from 16.04 in 1974 to 13.50 in 1978. Among the initially registered 129 hospitals, a similar decrease in perinatal mortality has been observed. Among the 18 main clinical causes of death, the percentages of placenta previa and neonatal respiratory distress exhibited a decrease during the last 5 years. Among the cases of perinatal death, in member hospitals of the Committee on Perinatal Statistics, three criteria were used to determine the perinatal stage for purposes of comparison, namely: 1) a gestational age of 28 or more weeks, or alternatively, birthweights of 2) 500 to 999.9 g or 3) 1000 g or more. Perinatal mortality was lowest in the group weighing 1000 g or more (9.87), slightly higher in the group aged 28 weeks or more (10.94) and highest in 500 to 999.9 g group (14.40). Individual case reports of perinatal death in member hospitals of the Committee are analyzed, and an ICD‐based investigation elucidated the characteristic patterns of perinatal death.