Table 1

Demographics, history, investigations, cardiac testing and final diagnosis in the 3 cases in which a genetic variant (all R1193Q in SCN5A) was identified during the prospective (‘unselected’) study period

ID	Age	Ancestry	Circumstances of death	Sleeping arrangement	Sleep position	SIDS category	Previous medical history	Cardiac tests during life	Family history of syncope or SIDS	Social history	Final cardiac diagnosis
3	5 months	Asian	Found deceased in bed	Own cot	Supine	SIDS IB	Nil. Full term	Nil	No	No adverse social factors	Uncertain
4	1 months	Pacific Island	Found deceased in bed	Not stated	Supine	SIDS IB	Nil	Nil	No	Unknown	Uncertain
6	<1 months	Maori	Found deceased in bed	Co-sleeping	Not stated	SIDS II	Nil	Nil	No	adverse	Uncertain

SIDS, sudden infant death syndrome.