Table 1.
Demographic, clinical, laboratory, and angiographic characteristics
| Patients | G1 LVEF ≤ 30% (n = 266) | G2 LVEF ≥ 55% (n = 213) | G3 LVEF ≥ 55% (n = 213) | G4 LVEF ≤ 30% (n = 226) | χ 2 |
|---|---|---|---|---|---|
| Demographic profile % | |||||
| Age (years) | 66 | 67 | 70 | 65 | 28.9* |
| Age ≥ 65 years | 53 | 62 | 63 | 54 | 26.2* |
| Male | 66 | 67 | 69 | 65 | 23.3* |
| Smokers or ex-smokers | 57 | 58 | 60 | 55 | 10.4* |
| Medical history % | |||||
| Previous infarction | 90 | 51 | 45 | 88 | 42.3† |
| Hypertension | 67 | 62 | 65 | 68 | 96.8* |
| Diabetes mellitus | 100 | 100 | 00 | 00 | NA |
| CHF class I ou II | 70 | 00 | 00 | 72 | NA |
| Laboratory (mg/dL) | |||||
| Total cholesterol | 226 ± 4 | 224 ± 6 | 216 ± 6 | 211 ± 3 | 48.6* |
| LDL cholesterol | 138 ± 14 | 140 ± 12 | 136 ± 16 | 132 ± 11 | 62.2* |
| HDL cholesterol | 39 ± 7 | 38 ± 8 | 36 ± 6 | 37 ± 8 | 44.5* |
| Triglycerides | 170 ± 8 | 166 ± 10 | 172 ± 5 | 168 ± 7 | 68.3‡ |
| Glycated hemoglobin (%) | 6.8 ± 2 | 6.9 ± 3 | 5.8 ± 8 | 5.7 ± 9 | NA |
| Creatinine clearance (mL/min) | 34.5 ± 9 | 84.3 ± 11 | 78.4 ± 8 | 58.2 ± 9 | 59.6‡ |
| Positive exercise test (%) | NA | 68 | 65 | NA | NA |
| Angiographic data (%) | |||||
| Two-vessel disease | 29 | 32 | 46 | 31 | 35.7* |
| Three-vessel disease | 71 | 68 | 64 | 69 | 48.2* |
| Ejection fraction (average) | 30 | 58 | 60 | 29 | NA |
G1 Group 1, G2 Group 2, G3 Group 3, G4 Group 4, LVEF left ventricular ejection fraction, CHF congestive heart failure, NA not applicable
* P < .10, † P < .001, ‡ P < .05