Table 1 Patients’ baseline characteristics
Active smokers (n = 12,442) | Non-smokers (n = 10,666) | P value | |
|---|---|---|---|
Age | |||
Mean | 53.7 (53.46, 53.83) | 62.3 (62.09, 62.45) | <0.001* |
Standard deviation | 11.29 | 11.64 | |
Gender | |||
Male | 12182 (97.9 %) | 5712 (53.6 %) | <0.001 |
Female | 260 (2.1 %) | 4954 (46.4 %) | |
Ethnicity | |||
Malay | 7398 (59.5 %) | 4879 (45.7 %) | |
Chinese | 2173 (17.5 %) | 2409 (22.6 %) | <0.001 |
Indian | 1920 (15.4 %) | 2755 (25.8 %) | |
Others | 951 (7.6 %) | 623 (5.8 %) | |
Risk factors/co-morbidities | |||
Dyslipidaemia | 2933 (23.6 %) | 3838 (36.0 %) | <0.001 |
Hypertension | 5267 (42.3 %) | 7390 (69.3 %) | <0.001 |
Diabetes | 3691 (29.7 %) | 5627 (52.8 %) | <0.001 |
Family history premature CAD | 1595 (12.8 %) | 1051 (9.9 %) | <0.001 |
Cerebrovascular disease | 228 (1.8 %) | 469 (4.4 %) | <0.001 |
Peripheral vascular disease | 43 (0.3 %) | 97 (0.9 %) | <0.001 |
Chronic lung disease | 276 (2.2 %) | 264 (2.5 %) | <0.001 |
Congestive heart failure | 416 (3.3 %) | 885 (8.3 %) | <0.001 |
Chronic renal failure | 311 (2.5 %) | 1028 (9.6 %) | <0.001 |
ACS diagnosis | |||
STEMI | 9609 (77.2 %) | 5684 (53.3 %) | <0.001 |
NSTEMI | 2833 (22.8 %) | 4982 (46.7 %) | |
Killip class | |||
Killip 1 | 6712 (66.1 %) | 5092 (61.9 %) | |
Killip 2 | 2081 (20.5 %) | 1951 (23.7 %) | <0.001 |
Killip 3 | 429 (4.2 %) | 515 (6.3 %) | |
Killip 4 | 939 (9.2 %) | 672 (8.2 %) | |