Table 1 Characteristics of the datasets utilized in this study
VinDr-CXR | ChestX-ray14 | CheXpert | MIMIC-CXR | UKA-CXR | PadChest | |
|---|---|---|---|---|---|---|
Number of radiographs (total) | 18,000 | 112,120 | 157,878 | 213,921 | 193,361 | 110,525 |
Number of radiographs (training set) | 15,000 | 86,524 | 128,356 | 170,153 | 153,537 | 88,480 |
Number of radiographs (test set) | 3,000 | 25,596 | 29,320 | 43,768 | 39,824 | 22,045 |
Number of patients | N/A | 30,805 | 65,240 | 65,379 | 54,176 | 67,213 |
Patient age (years) Median Mean ± standard deviation Range (minimum, maximum) | 42 54 ± 18 (2, 91) | 49 47 ± 17 (1, 96) | 61 60 ± 18 (18, 91) | N/A N/A N/A | 68 66 ± 15 (1, 111) | 63 59 ± 20 (1, 105) |
Patient’s sex Females/males [%] Training set, test set | 47.8/52.2 44.1/55.9 | 42.4/57.6 41.9/58.1 | 41.4/58.6 39.0/61.0 | N/A N/A | 34.4/65.6 36.3/63.7 | 50.0/50.0 48.2/51.8 |
Projections [%] Anteroposterior Posteroanterior | 0.0 100.0 | 40.0 60.0 | 84.5 15.5 | 58.2 41.8 | 100.0 0.0 | 17.1 82.9 |
Location | Hanoi, Vietnam | Maryland, USA | California, USA | Massachusetts, USA | Aachen, Germany | Alicante, Spain |
Number of contributing hospitals | 2 | 1 | 1 | 1 | 1 | 1 |
Labeling method | Manual | NLP (ChestX-ray14 labeler) | NLP (CheXpert labeler) | NLP (CheXpert labeler) | Manual | Manual & NLP (PadChest labeler) |
Original labeling system | Binary | Binary | Certainty | Certainty | Severity | Binary |
Accessibility of the dataset for research | Public | Public | Public | Public | Internal | Public |