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Two by two table comparing diagnosis of bovine respiratory disease (BRD) by pen checkers with BRD diagnosis by a computer‐aided lung auscultation (CALA) system
| Pen checker | Total | ||
|---|---|---|---|
| + | − | ||
| CALAa | |||
| + | 29 | 7 | 36 |
| − | 6 | 28 | 34 |
| Total | 35 | 35 | 70 |
Cattle with a CALA score ≥2 were considered BRD positive (+) whereas those with a CALA score = 1 were considered BRD negative (−).
