Characteristic Total N %
91 100
Age 10 - 29 years 4 4
30 - 49 years 25 27
50 - 69 years 37 41
70 - 89 years 16 18
> 90 years 2 2
Not reported 7 8
Gender Male 67 74
Female 24 26
Identified patient factors None 51 56
Stroke 8 8
Dementia 7 8
Epilepsy 4 4
Other 21 24
Circumstances of event Not known or reported 38 42
Eating 28 31
General anaesthetic 6 7
Trauma 5 5
Sleeping 4 4
Seizure 4 4
Other 6 7
Site of denture Airways 19 21
Hypopharynx or larynx 12 14
Upper GI tract 33 35
Lower GI tract 17 19
Passed spontaneously 7 8
Not reported 3 3
Procedure Endoscopic 38 42
Open surgery 33 36
Not required 12 13
Not reported 8 9
Denture Clasped 25 27
Unclasped 50 55
Not reported 16 18

N = number of patients.