<prompt> As per WHO low bih weight is defined as ?Bih weight less than 2.5 kgBih weight 10th percentileGestational age 34 weeksGestational age 28 weeks  <response>: Ans. is a i.e., Bih weight less than 2.5 kg o Appropriate for gestational age appropriate for date Babies with bih weight ranging between 10th to 90th percentile on such a cha are considered appropriate for date. Small for gestational age small for date Babies with bih weight less than 10th percentile are categorized as small for dates. o Large for gestational age large for date Babies with bih weight more than 90th percentile are categorized as large for date. o Low bih weight newborn Any neonate weighing less than 2500 gm at bih irrespective of the gestational age. o Very low bih weight newborn Any neonate weighing less than 1500 gm at bih irrespective of the gestational age. o Extremely low bih weight newborn Any neonate weighing less than 1000 gm at bih irrespective of the gestational age. 