Variable | Overall (n=244) | Eligible for CRT (n=184) | Ineligible for CRT (n=60) | P value |
Characteristics | ||||
Age, ±SD | 70.6±10.8 | 70.8±10.6 | 69.8±11.5 | 0.576 |
Female, N (%) | 68 (27.9) | 44 (23.9) | 24 (40.0) | 0.016 |
Ischaemic aetiology, N (%) | 124 (50.8) | 97 (52.7) | 27 (45.0) | 0.299 |
Comorbidities, N (%) | ||||
Hypertension | 87 (35.7) | 69 (37.50) | 18 (30.0) | 0.292 |
Diabetes mellitus | 70 (28.7) | 58 (31.5) | 12 (20.0) | 0.087 |
Chronic kidney disease | 60 (23.8) | 43 (23.4) | 17 (28.3) | 0.438 |
New York Heart Association Functional class, ±SD | 2.5±0.7 | 2.6±0.7 | 2.4±0.7 | 0.033 |
QRS duration, ±SD | 156.7±28.2 | 161.5±26.7 | 142.0±27.8 | <0.001 |
Left bundle branch block, N (%) | 137 (56.1) | 109 (59.2) | 28 (46.7) | 0.088 |
Echocardiography, ±SD | ||||
Left ventricular ejection fraction | 31.9±10.2 | 29.1±8.2 | 40.5±11.2 | <0.001 |
Left ventricular end-diastolic volume | 188.8±78.7 | 203.7±80.5 | 140.8±48.0 | <0.001 |
Left ventricular end-systolic volume | 129.7±55.8 | 143.3±53.7 | 85.8±53.7 | <0.001 |
CRT, cardiac resynchronisation therapy; N, number.