As per WHO, low bih weight is defined as
An LBW infant is an infant with a bih weight of less than 2.5 kg regardless of gestational age. It includesa) Preterm babiesb) Small for date babiespark 23e pg: 536
Bih weight less than 2.5kg
Bih weight less than 10th percentile
Gestational age less than 28weeks
Gestational age less than 34 weeks
Maternal and child care