Table.3 The rank sum test results about two observer’s subjective evaluation results
From: Comparison of lung image quality between CT Ark and Brilliance 64 CT during COVID-19
Group | The mean rank of observer A | The mean rank of observer B | ||
|---|---|---|---|---|
Evaluate of fine structure | Evaluate of general structure | Evaluate of fine structure | Evaluate of general structure | |
CT Ark | 124.50 | 128.32 | 126.85 | 118.53 |
Brilliance 64 | 120.50 | 116.68 | 118.15 | 126.47 |
Z | − 0.47 | − 1.40 | − 1.02 | − 0.96 |
P | 0.64 | 0.16 | 0.31 | 0.34 |