in an investigation of the total singleton birth population of new york city in 1976-1978 ( n = 320,726 ) , the authors divided perinatal mortality into four components : late fetal deaths that occurred before labor ( late antepartum fetal deaths ) , fetal deaths during labor ( intrapartum fetal deaths ) , neonatal deaths , and perinatal deaths attributed to congenital anomalies , and they assessed the relation of each of these to maternal age and parity , controlling for relevant confounding factors .
C3829316
late fetal deaths
C0015927
fetal deaths