Table 2 Demographic and clinical characteristics of NSTEMI patients by smoking status.
Never smoker (n = 3902) | Former smoker (n = 1766) | Current smoker (n = 3286) | p-value | |
|---|---|---|---|---|
Age in years, median (IQR) | 63.5 (55.7–72.6) | 63.6 (55.9–72.5) | 54.9 (48.8–62.2) | < 0.001 |
Male, n (%) | 2134 (54.7) | 1658 (93.9) | 3150 (95.9) | < 0.001 |
Ethnicity, n (%) | ||||
Chinese | 2567 (65.7) | 1107 (62.7) | 1896 (57.7) | < 0.001 |
Malay | 568 (14.6) | 339 (19.2) | 733 (22.3) | |
Indian | 695 (17.8) | 293 (16.6) | 603 (18.4) | |
Others | 72 (1.9) | 27 (1.5) | 54 (1.6) | |
History of diabetes, n (%) | 1828 (46.9) | 771 (43.7) | 895 (27.3) | < 0.001 |
History of hypertension, n (%) | 2997 (76.8) | 1344 (76.1) | 1724 (52.5) | < 0.001 |
History of hyperlipidemia, n (%) | 2676 (68.6) | 1294 (73.4) | 1802 (54.8) | < 0.001 |
History of AMI/CABG/PCI, n (%) | 1163 (29.8) | 836 (47.3) | 877 (26.7) | < 0.001 |
BMI in kg/m2, median (IQR) | 24.9 (22.5–28.0) | 24.8 (22.4–27.5) | 25.1 (22.8–27.9) | 0.031 |
Killip class on admission, n (%) | ||||
I | 3171 (81.2) | 1380 (78.2) | 2924 (89.0) | < 0.001 |
II | 431 (11.1) | 221 (12.5) | 210 (6.4) | |
III | 256 (6.6) | 142 (8.1) | 112 (3.4) | |
IV | 43 (1.1) | 22 (1.3) | 40 (1.2) | |
CPR in ambulance/ED, n (%) | 25 (0.6) | 10 (0.6) | 15 (0.5) | 0.579 |
Serum creatinine in 10 µmol on admission, median (IQR) | 8.6 (7.1–11.3) | 9.5 (7.9–12.4) | 8.4 (7.2–9.7) | < 0.001 |
Haemoglobin in g/dL on admission, median (IQR) | 13.3 (11.8–14.6) | 13.9 (12.4–15.0) | 14.8 (13.8–15.7) | < 0.001 |
Left ventricular ejection fraction < 50%, n (%) | 1226 (39.0) | 671 (47.5) | 970 (36.2) | < 0.001 |
