Table 1. Baseline Characteristics of the Patients in All Five BMI Groups.
| Variable | BMI(kg/m2) | ||||||
| <18.5 | 18.5–23.9 | 24–27.9 | 28–32 | >32 | Total | P-value | |
| (n = 31) | (n = 1387) | (n = 2496) | (n = 849) | (n = 153) | (n = 4916) | ||
| Age(yrs) | 67.1±6.2 | 61.8±8.4 | 59.6±8.5 | 58.8±8.7 | 59.2±8.6 | 60.1±8.6 | <.0001 |
| BMI(kg/m2) | 17.4±1.0 | 22.3±1.3 | 25.9±1.1 | 29.4±1.1 | 50.5±49.8 | 26.2±10.1 | <.0001 |
| Men | 20(64.5%) | 1110(80.0%) | 2133(85.5%) | 729(85.9%) | 123(80.4%) | 4115(83.7%) | <.0001 |
| Smoking | 10(32.3%) | 672(48.5%) | 1348(54.0%) | 496(58.4%) | 86(56.2%) | 2612(53.1%) | <.0001 |
| Family History | 1(3.2%) | 107(7.7%) | 206(8.3%) | 63(7.4%) | 6(3.9%) | 383(7.8%) | 0.2869 |
| Hypertension | 15(48.4%) | 784(56.5%) | 1535(61.5%) | 571(67.3%) | 107(70.0%) | 3012(61.2%) | <.0001 |
| Hyperlipidemia | 8(25.8%) | 480(34.6%) | 936(37.5%) | 345(40.6%) | 69(45.1%) | 1838(37.4%) | 0.0070 |
| Diabetes Mellitus | 7(22.6%) | 388(28.0%) | 633(25.4%) | 205(24.2%) | 36(23.5%) | 1269(25.8%) | 0.2427 |
| History of Renal Failure | 0 | 17(1.2%) | 16(0.6%) | 3(0.4%) | 0 | 36(0.7%) | 0.0929 |
| Creatinine (µmol/L) | 193.0±328.9 | 103.5±101.5 | 109.1±111.0 | 122.2±161.9 | 104.8±154.8 | 110.0±130.0 | 0.1180 |
| Cerebrovascular Events | 5(16.1%) | 94(6.8%) | 163(6.5%) | 45(5. 3%) | 8(5. 2%) | 315(6. 4%) | 0.1183 |
| Peripheral Artery Disease | 6(19. 4%) | 152(11.0%) | 212(8. 5%) | 58(6.8%) | 18(11.8%) | 446(9. 1%) | 0.0016 |
| Thrombolytic Therapy | 3(9.7%) | 133(9.6%) | 248(10.0%) | 56(6.6%) | 8(5.2%) | 488(9.1%) | 0.0196 |
| Unstable Angina Pectoris | 1(3.2%) | 152(11.0%) | 234(9.4%) | 87(10.3%) | 24(15.7%) | 498(10.1%) | 0.1186 |
| Myocardial Infarction | 11(35.5%) | 682(49.2%) | 1229(49.2%) | 397(46.8%) | 73(47.7%) | 2392(48.7%) | 0.4177 |
| Diseased Coronary Artery | 2.9±0.2 | 2.8±0.5 | 2.8±0.5 | 2.8±0.5 | 2.8±0.5 | 2.8±0.5 | 0.4558 |
| Left Main Disease | 8(25.8%) | 504(36.3%) | 700(28.0%) | 230(27.1%) | 35(22.9%) | 1477(30.0%) | <.0001 |
| Heart Failure | 1(3.2%) | 37(2.7%) | 45(1.8%) | 9(1.1%) | 6(4.0%) | 98(2.0%) | 0.0311 |
| Atrial Fibrillation | 0 | 41(3.0%) | 38(1.5%) | 17(2.0%) | 5(3.3%) | 101(2.1%) | 0.0278 |
| LVEF (%) | 59.4±9.7 | 60.0±10.1 | 59.7±9.4 | 59.2±9.1 | 58.2±8.9 | 59.5±9.5 | 0.2901 |
| Intravenous Nitrate | 0.06±0.2 | 0.06±0.2 | 0.05±0.2 | 0.06±0.2 | 0.09±0.3 | 0.06±0.2 | 0.1968 |
BMI: body mass index; LVEF: left ventricular ejection fraction. LVEF: left ventricular ejection fraction; ANOVA test was used to analyze continuous variables, χ2 test for categorical variables. P<0.05 was accepted as statistically significant.