title: [[Perinatal mortality rates in single and multiple births, and the effects of maternal age, birthweight, and other factors on the perinatal mortality rates in Japan]].
abstract: "The perinatal mortality rate (PMR) was analyzed using... Vital Statistics for 1950-1991 in Japan.  Secular changes in the PMRs were analyzed according to sex and single-multiple births.  This paper also investigated the effects of maternal age, birth order, gestational age, and birthweight on the PMR."  (SUMMARY IN ENG)
authors.forename: Y
authors.initials: Y
authors.lastname: Imaizumi
mesh_terms: D000367:Age Factors; D001208:Asia; D001695:Biology; D001722:Birth Order; D001724:Birth Weight; D001835:Body Weight; D003710:Demography; D019049:Developed Countries; D005191:Family Characteristics; D005195:Family Relations; D005202:Asia, Eastern; D005313:Fetal Death; D005333:Fetus; D005865:Gestational Age; D007226:Infant Mortality; D007564:Japan; D008423:Maternal Age; D009026:Mortality; D009099:Multiple Birth Offspring; D010290:Parents; D010827:Physiology; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D011247:Pregnancy; D011256:Pregnancy Outcome; D012098:Reproduction; D012737:Sex Factors
keywords: Age Factors; Asia; Biology; Birth Order; Birth Weight; Body Weight; Demographic Factors; Developed Countries; Eastern Asia; Family And Household; Family Characteristics; Family Relationships; Fetal Death; Fetus; Gestational Age; Infant Mortality; Japan; Maternal Age; Mortality; Multiple Birth; Parental Age; Physiology; Population; Population Characteristics; Population Dynamics; Pregnancy; Pregnancy Outcomes; Reproduction; Sex Factors