Table 1.

Demographics for the operative and non-operative patient groups

Baseline characteristic	Operative group (n=13)	Non-operative group (n=12)	p-value
Average age (years)	62.2	70.4	0.065
Male-to-female ratio	7:6	3:9	0.211
Medical co-morbidities			0.193
Ischaemic heart disease	0 (0%)	1 (8.3%)	(for overall co-morbidities)
Hypertension	5 (38.5%)	6 (50%)
Atrial fibrillation	1 (7.7%)	4 (33%)
Diabetes mellitus	3 (23.1%)	5 (41.6%)
Cerebrovascular disease	3 (23.1%)	3 (25.0%)
Respiratory disease	2 (15.4%)	1 (8.3%)
Mean P-POSSUM
Physiology score	15.54	19.50	0.010
Operative severity score	9.46	8.17	0.114
Morbidity score (%)	13.77	24.81	0.011
Mortality score (%)	0.63	1.51	0.020

P-POSSUM = Portsmouth Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity