Perinatal moality denominator include:-

Perinatal moality rate includes both late fetal deaths and early neonatal deaths PNMR = late fetal death and early neonatal deaths weighing over 1000 gms at bih /Total live bihs weighing over 1000 gm at bih x 1000 Perinatal period is from 28 weeks period of gestation to 7th completed days of life. The WHO's definition, more appropriate in nations with well established vital records of stillbihs is as follows : PMR = Late foetal deaths (28 weeks gestation and more)+ early neonatal deaths (first week) in one year - - ----- --- ----- x 1000 Live bihs + late foetal deaths(28 weeks gestation and more)The WHO's definition, more appropriate in nations with less well established vital records, is : Perinatal moality rate- Late foetal deaths + postnatal deaths/Live bihs in a year X 1000There is a difference in denominator of the perinatal moality rate defined by the WHO and industrially developednations.