Table 1 Baseline characteristics
All | No Classical | Classical | ||
|---|---|---|---|---|
n = 283 | n = 87 | n = 196 | p-value | |
Age, years | 66 ± 11 | 67 ± 9 | 65 ± 12 | 0.13 |
Women | 113 (40%) | 20 (23%) | 93 (47%) | < 0.001 |
Days from ECG to CRTa | 6 (2–25) | 7 (3–24) | 6 (1–24) | 0.89 |
Ischemic heart disease | 136 (48%) | 55 (63%) | 81 (41%) | < 0.001 |
NYHA class III/IV | 230 (81%) | 74 (85%) | 156 (80%) | 0.32 |
QRS duration, ms | 157 ± 21 | 146 ± 17 | 162 ± 21 | < 0.001 |
QRS duration < 150 ms | 110 (39%) | 53 (61%) | 57 (29%) | < 0.001 |
Strict LBBB | 226 (80%) | 55 (63%) | 171 (87%) | < 0.001 |
1st degree AV block | 51 (18%) | 16 (18%) | 35 (18%) | 0.99 |
Atrial fibrillation/flutter | 82 (29%) | 30 (34%) | 52 (27%) | 0.20 |
Hypertension | 195 (69%) | 67 (77%) | 128 (65%) | 0.05 |
Diabetes | 90 (32%) | 40 (46%) | 50 (26%) | < 0.001 |
Creatinine, mg/dL+ | 1.2 (1.0–1.5) | 1.3 (1.0–1.6) | 1.1 (0.9–1.5) | 0.01 |
ACE/ARB | 230 (81%) | 68 (78%) | 162 (83%) | 0.32 |
Betablocker | 257 (91%) | 79 (91%) | 178 (91%) | 0.82 |