Table 1 Baseline characteristics
|  | GE-cohort (n = 123) | Philips-cohort (n = 88) | p-value |
|---|---|---|---|
Age (years) | 68.3 (61.3–73.4) | 67.2 (59.0–73.9) | 0.450 |
Gender (n, % male) | 82 (66.7%) | 53 (60.2%) | 0.384 |
BMI (kg/m2) | 26.5 (23.8–29.6) | 26.2 (23.6–29.3) | 0.813 |
NYHA Class (n, %) | |||
 I | 1 (0.8%) | 0 (0.0%) | 0.869 |
 II | 77 (62.6%) | 53 (60.2%) | |
 III | 45 (36.6%) | 35 (39.8%) | |
QRS duration (ms) | 177 (160–192) | 179 (166–193) | 0.293 |
QRS morphology (n, %) | |||
 LBBB | 68 (56.7%) | 55 (64.7%) | 0.311 |
 IVCD | 52 (43.3%) | 30 (35.3%) | |
LVEDV (ml) | 183.3 (148.8–247.7) | 168.0 (132.0–211.8) | 0.051 |
LVESV (ml) | 135.3 (100.7–194.7) | 130.3 (92.8–167.3) | 0.087 |
LVEF (%) | 25.6 ± 7.3 | 26.5 ± 7.9 | 0.406 |
LVEDD (cm) | 6.3 ± 0.8 | 6.2 ± 0.8 | 0.591 |
IVMD (ms) | 47.1 ± 28.8 | 46.3 ± 30.2 | 0.855 |
Apical rocking (n, %) | 71 (58.2%) | 56 (63.6%) | 0.476 |
Septal flash (n, %) | 56 (47.5%) | 42 (48.8%) | 0.888 |
Frame rate (Hz) | 61 ± 12 | 55 ± 7 | <.001 |
Image quality (n, %) | |||
 Poor | 31 (25.2%) | 8 (9.1%) | 0.011 |
 Average | 54 (43.9%) | 50 (56.8%) | |
 High | 38 (31.0%) | 30 (34.1%) | |
ESV reduction | 20.4 ± 22.9 | 24.9 ± 25.7 | 0.208 |
Responders (n, %) | 65 (58.6%) | 54 (65.1%) | 0.375 |