Table 5.
Left ventricular ejection fraction (LVEF) versus number of ECG criteria met in 548 subjects with previous MI (N = 548)
| Number of ECG criteria met a | Left ventricular ejection fraction cutoff of 30% | Left ventricular ejection fraction cutoff of 40% | ||||
|---|---|---|---|---|---|---|
| Total number of patients b (N) | LVEF ≤ 30% | Left ventricular ejection fraction > 30% | Total number of patients b (N) | LVEF ≤ 40% | Left ventricular ejection fraction > 40% | |
| 0 | 164 | 15 (9.15%) | 149 (90.9%) | 141 | 41 (29.1%) | 100 (70.9%) |
| 1 | 220 | 41 (18.6%) | 179 (81.4%) | 171 | 80 (46.8%) | 91 (53.2%) |
| 2 | 109 | 23 (21.1%) | 86 (78.9%) | 141 | 78 (55.3%) | 63 (44.7%) |
| 3 | 51 | 15 (29.4%) | 36 (70.6%) | 89 | 60 (67.4%) | 29 (32.6%) |
| 4 | 4 | 2 (50%) | 2 (50%) | 6 | 5 (83.3%) | 1 (16.7%) |
| >4 | 0 | 0 | 0 | 0 | 0 | 0 |
| χ2 (Chi‐square for Trend) P Value | 0.0019 | <0.0001 | ||||
a
Simplified Selvester QRS Score of ≥ 10 was used as cutoff for LVEF ≤ 30% and Simplified Selvester QRS Score of ≥ 7 was used as cutoff for LVEF ≤ 40%.
b
Number of patients with ECGs meeting the specified number of criteria. The numbers in these columns differ for LVEF ≤ 30% and LVEF ≤ 40% because different cutoff values of the Simplified Selvester QRS Score were used in the two groups.