Study Characteristics | Data |
---|---|
Sample size, mean ± standard deviation, median (range) | 86.6 ± 45.8, 81 (17–191) |
Journal type, n (%) | N = 29 |
 Imaging | 13 (44.8) |
 Non-imaging | 16 (55.2) |
First authorship, n (%) | N = 29 |
 Radiologist | 19 (65.5) |
 Non-radiologist | 10 (34.5) |
Imaging modality, n (%) | N = 29 |
 CT | 9 (31.0) |
 MRI | 14 (48.3) |
 PET | 6 (20.7) |
Biomarker, n (%) | N = 33 |
 Diagnostic | 3 (9.1) |
 Predictive | 18 (54.5) |
 Prognostic | 12 (36.4) |
Model type, n (%) | N = 33 |
 Type 1a: Developed model validated with exactly the same data | 8 (24.2) |
 Type 1b: Developed model validated with resampling data | 8 (24.2) |
 Type 2a: Developed model validated with randomly splitting data | 12 (36.4) |
 Type 2b: Developed model validated with non-randomly splitting data | 1 (3.0) |
 Type 3: Developed model validated with separate data | 4 (12.1) |
 Type 4: Validation only | 0 (0.0) |