Definitions

Perinatal
Describes the period surrounding birth, and traditionally includes the time from fetal viability from about 24 weeks of pregnancy up to either 7 or 28 days of life.

Perinatal mortality
Fetal deaths after 24 completed weeks of gestation and death before 7 completed days.

Stillbirth
A child which has issued forth from its mother after the 24th week of pregnancy and which did not, at any time after being completely expelled from its mother, breathe or show any other signs of life.

Neonatal mortality
Death before the age of 28 completed days following live birth.

Early neonatal is up to 7 days
Late neonatal is from 7 and up to 28 days.

Infant mortality
Death in the first year following live birth.