Table 1 Criteria used for case definition to identify cause-specific mortality*
Causes of death | Case definition | Search criteria for clinical diagnosis in registry |
|---|---|---|
Congenital malformation | lethal congenital malformation (congenital heart, spinal bifida, congenital syndromes, gastrointestinal malformation) | − multiple congenital malformation |
− congenital heart disease | ||
− spinal bifida/hydrocephalus | ||
− congenital syndromes or syndrome baby and deaths due to systemic conditions such as-renal failure or gastrointestinal system | ||
Birth asphyxia | birth asphyxia, hypoxic ischaemic encephalopathy Apgar based definition | − birth asphyxia weight >1000 g or gestational age >27 weeks |
− birth asphyxia and prematurity with gestational age ≥33wks and birth weight ≥2500 g or birth weight ≥ 1800 g if gestational age unknown | ||
− hypoxic ischaemic encephalopathy five minutes Apgar less than 7 | ||
Prematurity | prematurity, respiratory distress syndrome in preterm, necrotizing enterocolite in preterm birth | − prematurity |
− prematurity and asphyxia with gestational age < 33 weeks and birth weight < 2500 g or birth weight < 1800 g if gestational age is unknown | ||
− respiratory distress syndrome in preterm | ||
− necrotizing enterocolitis | ||
− birth asphyxia gestational age <27 weeks or birth weight <1000 g | ||
− infection with gestational age <33 weeks | ||
Infection | neonatal infection, sepsis/septicaemia, meningitis, pneumonia | − neonatal infection |
− sepsis/septicaemia | ||
− meningitis | ||
− pneumonia | ||
− impetigo neonatorum | ||
Others | other specific causes not classified above | − neonatal jaundice |
− meconium aspiration syndrome | ||
− respiratory distress syndrome in term babies |