Table 2

Baseline patient demographics

VariableOverall (n=244)Eligible for CRT (n=184)Ineligible for CRT (n=60)P value
Characteristics
 Age, ±SD70.6±10.870.8±10.669.8±11.50.576
 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 (%)
 Hypertension87 (35.7)69 (37.50)18 (30.0)0.292
 Diabetes mellitus70 (28.7)58 (31.5)12 (20.0)0.087
 Chronic kidney disease60 (23.8)43 (23.4)17 (28.3)0.438
 New York Heart Association Functional class, ±SD2.5±0.72.6±0.72.4±0.70.033
 QRS duration, ±SD156.7±28.2161.5±26.7142.0±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 fraction31.9±10.229.1±8.240.5±11.2<0.001
 Left ventricular end-diastolic volume188.8±78.7203.7±80.5140.8±48.0<0.001
 Left ventricular end-systolic volume129.7±55.8143.3±53.785.8±53.7<0.001
  • CRT, cardiac resynchronisation therapy; N, number.