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 |
|||