Table 1 Provenience and characteristics of the included chest x-ray exams
Timeframe | COVID-19 | Negative | Total | |
|---|---|---|---|---|
Classifier training + validation (cross-validation) | ||||
Centre 1 | 1 March to 13 March 2020 | 135 | 135 | 270 |
Centre 2 | 25 February to 16 March 2020 | 115 | 230 | |
Mid-February to mid-March 2019 | 115 | |||
Total training + validation | 250 | 250 | 500 | |
Classifier and human independent testing | ||||
Centre 1 | 14 March to 19 March 2020 | 74 | 36 | 110 |
Total testing | 74 | 36 | 110 | |
Total training + validation + testing | 324 | 276 | 610 | |