Table 1.

Patient characteristics

	Fit for AAA repair (n=66)	Not fit for AAA repair (n=36)	p-value
Median age at CPET (range)	74 (49–88)	77 (49–87)	0.019†
Sex			0.365*
Male	62 (93.9%)	32 (88.9%)
Female	4 (6.1%)	4 (11.1%)
Smoking status			0.300*
Non-smoker	12 (18.2%)	5 (13.9%)
Ex-smoker	25 (37.9%)	15 (41.7%)
Smoker	23 (34.8%)	9 (25.0%)
Unknown	76 (9.1%)	7 (19.4%)
Co-morbidities
Median number per patient (range)	3 (0–5)	2 (0–5)	0.321†
Respiratory disease	20 (30.3%)	10 (32.3%)	0.846*
Hypercholesterolaemia	54 (81.8%)	27 (87.1%)	0.514*
Hypertension	58 (87.9%)	27 (84.4%)	0.632*
Diabetes	8 (12.1%)	1 (3.2%)	0.264‡
Ischaemic heart disease	32 (48.5%)	12 (38.7%)	0.367*
CVA/TIA	5 (7.6%)	0 (0.0%)	0.174‡
Heart failure	4 (6.1%)	3 (9.7%)	0.677‡
Serum creatinine (range)	99.5μmol/l (49–275μmol/l)	104μmol/l (55–748μmol/l)	0.563†

AAA = abdominal aortic aneurysm; CPET = cardiopulmonary exercise testing; CVA = cerebrovascular accident; TIA = transient ischaemic attack

^*Pearson's chi-square test;

^†Mann–Whitney U test;

^‡Fisher's exact test

(The data on co-morbidities for five patients ‘not fit for repair' were incomplete. Percentages and p-values are based on a reduced sample of n=31.)