Table 1 Patient characteristics in the training and testing sets.

From: Development and prospective validation of COVID-19 chest X-ray screening model for patients attending emergency departments

 

Size (number of images)

Age* (years)

Female Sex (number of images)

Anteroposterior frequency

COVID-19 positive (number of images)

Training Set

8239

67 ± 18

4090

28%

1650

Testing Set

3289

64 ± 18

1664

28%

249

  1. *Reported as average ± standard deviation.
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