Table 3 Evaluation of agreement between two radiologists in RT-PCR positive and negative patients according to RSNA expert consensus statement
RT-PCR | RSNA expert consensus statement | Observer B | Test value Kappa (κ); p | |||||
|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | |||||
Positive | Observer A | 1-Typical COVID-19 | N % | 483 97.2 | 11 2.2 | 3 0.6 | 0 | 0.716; < 0.001 |
2-Indeterminate | N % | 12 19.0 | 34 54.0 | 13 20.6 | 4 6.3 | |||
3-Atypical COVID-19 | N % | 1 5.9 | 8 47.1 | 1 5.9 | 7 41.2 | |||
4-Negative for Pneumonia | N % | 0 | 1 2.9 | 1 2.9 | 33 94.3 | |||
Negative | Observer A | 1-Typical COVID-19 | N % | 27 90.0 | 2 6.7 | 1 3.3 | 0 | 0.743; < 0.001 |
2-Indeterminate | N % | 0 | 22 57.9 | 16 42.1 | 0 | |||
3-Atypical COVID-19 | N % | 1 1.0 | 22 21.0 | 76 72.4 | 6 5.7 | |||
4-Negative for pneumonia | N % | 0 | 0 | 5 4.2 | 113 95.8 | |||