This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pediatrics, Subject name: Social & Preventive Medicine
Infant mortality rate does NOT include: 
Select and explain. 
A. Post neonatal Mortality, B. Early neonatal Mortality, C. Perinatal Mortality, D. Late neonatal Mortality
C: Perinatal Mortality
Answer: C: Perinatal Mortality 
Explanation: Ans (c) Perinatal MortalityRef : K. Park 23rd ed. / 567, 19th/ 449 fig 9Perinatal Mortality Rate (PMR)PMR =--------------------------------------Live births in the same year x 1000Perinatal Mortality Rate (PMR)=Late fetal deaths + Early neonatal deaths----------------------------------Late fetal deaths + live birthsx 100Where Late fetal means 28 weeks gestation or more; Early neonatal means first week