|  | Rectum approval-proportion |  |  |
---|---|---|---|---|
Registration comparison | N | median difference | Z-value | P-value |
V2 versus V1 | 21 | –0.032 | –3.44 | 0.0002 |
HS versus V1 | 21 | –0.169 | –3.84 | <0.0001 |
HS versus V2 | 21 | –0.124 | –3.22 | 0.0006 |
D versus V1 | 21 | –0.241 | –4.02 | <0.0001 |
D versus V2 | 21 | –0.189 | –4.00 | <0.0001 |
D versus HS | 21 | 0 | – | – |