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Severity class distribution for Dataset 1 from Hospital 1 (USA), Dataset 2 from Hospital 1 (USA), and Dataset 3 from Hospital 2 (South Korea)
| Dataset/severity class | Normal | Mild | Moderate | Severe |
|---|---|---|---|---|
| Dataset 1 | 147 (12.7%) | 358 (29.64%) | 316 (29.16%) | 387 (32.03%) |
| Dataset 2 | 156 (7.36%) | 641 (30.24%) | 509 (24.01%) | 814 (38.40%) |
| Dataset 3 | 425 (34.87%) | 461 (37.81%) | 189 (15.50%) | 144 (11.81%) |
