title: [Sex ratio and survival rate in embryogenesis and the perinatal period].
abstract: Sex ratio was studied among abortuses and infants who died perinatally (9972 cases). Sex begins influencing mortality in the perinatal period, in which a significant increase in the sex ratio is shown (106 males: 100 females--antenatal; 136 males: 100 females--intranatal; 159 males:100 females--within the first 6 days of life).
mesh_terms: D000022:Abortion, Spontaneous / Q000235:genetics; D020964:Embryo Loss / Q000235:genetics*; D005260:Female; D005313:Fetal Death / Q000235:genetics*; D006801:Humans; D007226:Infant Mortality; D007621:Karyotyping; D008297:Male; D011247:Pregnancy; D012728:Sex Chromatin / Q000032:analysis; D012744:Sex Ratio; D014960:X Chromosome / Q000032:analysis; D014998:Y Chromosome / Q000032:analysis
vernacular_title: Sootnoshenie i vyzhivaemost' polov v émbriogeneze i perinatal'nom periode.