Editing SIDS (section)

===Age===
SIDS has a four-parameter [[lognormal]] [[age distribution]] that spares infants shortly after birth—the time of maximal risk for almost all other causes of non-trauma infant death.

By definition, SIDS deaths occur under the age of one year, with the peak incidence occurring when the infant is two to four months old. This is considered a critical period because the infant's ability to rouse from sleep is not yet mature.<ref name=Kin2009/>