Characteristic Male, N = 7,9911 Female, N = 8,7781 p-value2
Age (years)
68 (59, 75) 69 (58, 76) <0.001
Body Mass Index (BMI)
26.5 (23.7, 29.1) 26.6 (23.1, 30.3) 0.037
Smoking
<0.001
Never 3,378 (42%) 4,866 (55%)
Ex-smoker 3,858 (48%) 2,979 (34%)
Current 755 (9.4%) 933 (11%)
Chronic Obstructive Pulmonary Disorder (COPD)
1,071 (13%) 1,620 (18%) <0.001
Cerebrovascular disease
<0.001
None 7,170 (90%) 7,696 (88%)
Transient Ischaemic Attack (TIA) 345 (4.3%) 501 (5.7%)
Stroke with recovery 257 (3.2%) 340 (3.9%)
Stroke with deficit 219 (2.7%) 241 (2.7%)
Peripheral Vascular Disease (PVD)
575 (7.2%) 473 (5.4%) <0.001
Diabetes Mellitus
0.009
None 6,956 (87%) 7,496 (85%)
Diet controlled 212 (2.7%) 287 (3.3%)
Tablet controlled 616 (7.7%) 726 (8.3%)
Insulin controlled 207 (2.6%) 269 (3.1%)
Hypertension
4,342 (54%) 4,586 (52%) 0.007
Creatinine >200mmol/ml
318 (4.0%) 173 (2.0%) <0.001
Atrial Fibrillation
2,865 (36%) 3,745 (43%) <0.001
Recent Myocardial Infraction (1 month)
383 (4.8%) 272 (3.1%) <0.001
Previous Cardiac Surgery
1,555 (19%) 1,412 (16%) <0.001
Previous Percutaneous Coronary Intervention
0.020
None 7,543 (94%) 8,373 (95%)
<24 hours, same admission 9 (0.1%) 12 (0.1%)
>24 hours, same admission 32 (0.4%) 24 (0.3%)
>24 hours, previous admission 407 (5.1%) 369 (4.2%)
Left Ventricular Ejection Fraction
<0.001
Poor <30% 537 (6.7%) 299 (3.4%)
Moderate 30-50% 2,523 (32%) 2,155 (25%)
Good ≥50% 4,931 (62%) 6,324 (72%)
New York Heart Association Score
<0.001
1 923 (12%) 519 (5.9%)
2 2,662 (33%) 2,408 (27%)
3 3,393 (42%) 4,693 (53%)
4 1,013 (13%) 1,158 (13%)
Canadian Cardiovascular Society Score
0.2
0 5,404 (68%) 6,044 (69%)
1 956 (12%) 1,066 (12%)
2 1,052 (13%) 1,066 (12%)
3 411 (5.1%) 431 (4.9%)
4 168 (2.1%) 171 (1.9%)
Euroscore II Score
2.32 (1.45, 4.13) 2.52 (1.60, 4.29) <0.001
Urgency
<0.001
Elective 5,572 (70%) 6,834 (78%)
Urgent 2,419 (30%) 1,944 (22%)
Median (IQR); n (%) Wilcoxon rank sum test; Pearson’s Chi-squared test Median (IQR); n (%) Wilcoxon rank sum test; Pearson’s Chi-squared test Median (IQR); n (%) Wilcoxon rank sum test; Pearson’s Chi-squared test Median (IQR); n (%) Wilcoxon rank sum test; Pearson’s Chi-squared test