Table 2.

Variables mapped across the three databases, Australia, Canada and New Zealand

Variable	Australia	Canada	New Zealand	Included in study (√)	Included in Utstein Guidelines (√) [23]	Recommended core variables (√)
Case ID	X	X	X		√ (Victim Identifier)	√
Data source			X
Province, region, state/territory of drowning incident	X	X	X
Incident year	X	X	X	√
Date of incident (DD-MM-YYYY)	X	X	X	√	√ (Incident date and time of day)	√
Time of incident	X
Primary Cause of Death	X	X				√
Contributory cause(s) of death	X	X
Incident synopsis	X	X	X
Incident type			X
Inquest number			X
Age in years	X	X	X		√ (Age -Birthdate)	√
Age group	X	X	X	√
Sex	X	X	X	√	√ (Sex)	√
Ethnicity	X		X		√ (Race and ethnic categories)	√
First Nations Peoples	X	X	X	√
Residential status	X	X	X	√
Population Density (Urban/Rural)	X	X
Location geographic	X	X	X
Water Depth		X
Distance from Safety		X
Wave conditions		X
Water current		X
Ice conditions		X
Water Temp Range		X
Light conditions		X
Aquatic location category	X	X	X	√		√
Activity prior to drowning	X	X	X	√		√
Purpose of Activity (Daily Living, Recreational/Non-recreational)		X	X
Primary recreational activity		X
Secondary recreational activity		X
Daily Living Activity		X
Occupational Activity		X
Boating Causes		X
Type of Boating Incident		X
Watercraft Type	X	X
Multiple Fatality Event – Yes/No/Unknown	X	X	X	√
If yes, number of fatalities	X		X
Lifejacket wear	X	X	X	√
Medical Condition (pre-existing, chronic)	X	X	X	√	√ (Preexisting illness)
Hypothermia			X
Victim Alcohol Involvement	X	X	X	√		√
Blood Alcohol Content (BAC)	X	X
Alcohol Involvement by Companions	X	X
Victim Drug Involvement	X	X	X	√		√
Type of drug (legal, not legal)	X	X
Type of drug (name)	X	X
Victim swimming ability	X	X
Resuscitation enacted – Yes/No/Unknown		X	X			√
Beach Patrolled			X
Pool Fencing	X	X	X
Supervision of children	X	X
Commercial			X
Occupation			X
Purpose			X