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Table 2 Variations in the definitions of fetal, neonatal and perinatal death

From: Perinatal mortality following assisted reproductive technology treatment in Australia and New Zealand, a public health approach for international reporting of perinatal mortality

Gestational age at birth dependent on country or organisation definition (weeks)

Survival after birth (days)

≥ 20

≥ 22

≥ 24

≥ 28

< 7

< 28

Fetal death

Neonatal death

Death prior to complete expulsion or extraction from its mother of a product of conception at a defined number of completed weeks of gestational age

Death that occurs of a liveborn infant in the neonatal period defined as either <7 or <28 completed days after birth

Perinatal death

Any fetal and/or neonatal death that occurs within the defined perinatal period