4.2 Percentages and odds
In a study of how well emergency dispatchers recognised signs of stroke (Oostema et al. 2018), the data shown below were collected.
Sex of patients | Dispatcher suspected stroke | Dispatcher missed stroke |
---|---|---|
Male | 67 | 43 |
Female | 97 | 39 |
- What percentage of male patients had their stroke symptoms missed by the dispatcher?
- What percentage of female patients had their stroke symptoms missed by the dispatcher?
- What are the odds that a male patients had their stroke symptoms missed by the dispatcher?
- What are the odds that a female patients had their stroke symptoms missed by the dispatcher?
- What is the odds ratio that a patients had their stroke symptoms missed by the dispatcher, comparing males to females?
References
Oostema JA, Chassee T, Reeves M. Emergency dispatcher stroke recognition: Associations with downstream care. Prehospital Emergency Care. 2018;22(4):466–71.