Characteristic Male, N = 121,3191 Female, N = 26,1571 p-value2
Age (years)
67 (60, 74) 70 (62, 76) <0.001
Body Mass Index (BMI)
28.0 (25.8, 31.2) 28.0 (25.2, 32.0) 0.11
Smoking
<0.001
Never 39,737 (33%) 12,326 (47%)
Ex-smoker 66,211 (55%) 10,573 (40%)
Current 15,371 (13%) 3,258 (12%)
Chronic Obstructive Pulmonary Disorder (COPD)
13,525 (11%) 3,723 (14%) <0.001
Cerebrovascular disease
<0.001
None 113,159 (93%) 24,151 (92%)
Transient Ischaemic Attack (TIA) 4,342 (3.6%) 1,082 (4.1%)
Stroke with recovery 2,368 (2.0%) 606 (2.3%)
Stroke with deficit 1,450 (1.2%) 318 (1.2%)
Peripheral Vascular Disease (PVD)
14,661 (12%) 3,292 (13%) 0.025
Diabetes Mellitus
<0.001
None 85,551 (71%) 17,169 (66%)
Diet controlled 5,232 (4.3%) 1,128 (4.3%)
Tablet controlled 21,697 (18%) 4,772 (18%)
Insulin controlled 8,839 (7.3%) 3,088 (12%)
Hypertension
91,150 (75%) 20,797 (80%) <0.001
Creatinine >200mmol/ml
1,782 (1.5%) 319 (1.2%) 0.002
Atrial Fibrillation
4,733 (3.9%) 772 (3.0%) <0.001
Recent Myocardial Infraction (1 month)
38,460 (32%) 9,019 (34%) <0.001
Previous Cardiac Surgery
1,688 (1.4%) 265 (1.0%) <0.001
Previous Percutaneous Coronary Intervention
<0.001
None 102,250 (84%) 22,239 (85%)
<24 hours, same admission
434 (0.4%) 87 (0.3%)
>24 hours, same admission 1,613 (1.3%) 394 (1.5%)
>24 hours, previous admission 17,022 (14%) 3,437 (13%)
Left Ventricular Ejection Fraction
<0.001
Poor <30% 5,544 (4.6%) 905 (3.5%)
Moderate 30-50% 28,702 (24%) 5,366 (21%)
Good ≥50% 87,073 (72%) 19,886 (76%)
New York Heart Association Score
<0.001
1 35,885 (30%) 5,989 (23%)
2 59,911 (49%) 12,732 (49%)
3 22,783 (19%) 6,533 (25%)
4 2,740 (2.3%) 903 (3.5%)
Canadian Cardiovascular Society Score
<0.001
0 12,606 (10%) 2,318 (8.9%)
1 11,369 (9.4%) 1,994 (7.6%)
2 47,198 (39%) 9,233 (35%)
3 35,695 (29%) 8,443 (32%)
4 14,451 (12%) 4,169 (16%)
Euroscore II Score
1.60 (1.17, 2.35) 2.11 (1.46, 3.15) <0.001
Urgency
<0.001
Elective 71,235 (59%) 13,890 (53%)
Urgent 50,084 (41%) 12,267 (47%)
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