<prompt> In a ceain population, there were 4050 bihs in last one year. There were 50 still bihs. 50 infants died within 7 days where as 150 died within 28 days. What is the neonatal moality rate-5062.512.549.4  <response>: Ans. is a i.e., 50 Neonatal deaths are deaths occurring during the neonatal period, commencing at bih and ending 28 completed days after bih. Neonatal moality rate is the number of neonatal deaths in a given year per 1000 live bihs in that year. 