Table 1 Overview of the baseline characteristics of all study cohort
|  | Training cohort, n = 79 | Validation cohort, n = 11 | Testing cohort, n = 23 | P-value |
|---|---|---|---|---|
Patients with CAD, n (%) | 78 (98.73) | 10 (90.91) | 22 (95.65) | 0.27 |
Males, n (%) | 45 (56.96) | 7(63.64) | 15 (65.22) | 0.74 |
Age, mean ± SD | 68.46 ± 8.86 | 73.0 ± 3.56 | 69.0 ± 4.44 | 0.40 |
Age > 60, n (%) | 30 (37.98) | 3 (27.27) | 6 (26.09) | 0.50 |
Involved vessel | ||||
 LAD, n (%) | 50 (63.29) | 8 (72.73) | 16 (69.56) | 0.74 |
 LCX, n (%) | 7 (8.86) | 0 (0) | 2 (8.70) | 0.59 |
 RCA, n (%) | 13 (16.46) | 3 (27.27) | 5 (21.74) | 0.63 |
Pullbacks | 79 | 11 | 23 | < 0.001 |
Images | 7808 | 1073 | 2189 | < 0.001 |
IVUS image categories | ||||
 Calcified plaque, n (%) | 2425 (31.06) | 393 (36.63) | 651 (29.74) | < 0.001 |
 Bifurcation, n (%) | 338 (4.33) | 55 (5.13) | 145 (6.62) | < 0.001 |
 Adjacent vessels, n (%) | 916 (11.73) | 199 (18.55) | 197 (9.00) | < 0.001 |
 Stent, n (%) | 171 (2.19) | 62 (5.78) | 60 (2.74) | < 0.001 |
 Guidewire artifacts, n (%) | 2518 (32.25) | 223 (20.78) | 945 (43.17) | < 0.001 |
 Lipid fibrous plaque, n (%) | 3962 (50.74) | 467 (43.52) | 1109 (50.67) | < 0.001 |
 None, n (%) | 1411 (18.07) | 203 (18.92) | 422 (19.28) | 0.39 |