Table 1.

Breakdown of out of hospital cardiopulmonary arrests by aetiology

	N (%) (n=21 175)	N (%) (n=21 175)
Presumed cardiac disease	17 451 (82.4)	17 451 (82.4)
Non-cardiac internal aetiologies	1814 (8.6)
Lung disease		901 (4.3)
Cerebrovascular disease		457 (2.2)
Cancer		190 (0.9)
Gastrointestinal haemorrhage		71 (0.3)
Obstetric/paediatric		50 (0.2)
Pulmonary embolism		38 (0.2)
Epilepsy		36 (0.2)
Diabetes mellitus		30 (0.1)
Renal disease		23 (0.1)
Other internal		18 (0.1)
Non-cardiac external aetiologies	1910 (9.0)
Trauma		657 (3.1)
Asphyxia		465 (2.2 )
Drug overdose		411 (1.9)
Drowning		105 (0.5)
Electric shock/lightening		28 (0.1)
Other suicide		194 (0.9)
Other external		50 (0.2)