Table 8 Mantel-Haenszel test for a linear trend between surgical difficulty and morbidity scores
Morbidity Score | N | Surgical Difficulty Score | x2 | p-value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
0 | 1 | 2 | 3 | 4 | 5 | 6 | ||||
0 | 248 | 1 | 56 | 112 | 29 | 47 | 3 | 0 | 10.093 | 0.001 |
1 | 3 | 0 | 0 | 2 | 0 | 1 | 0 | 0 | ||
2 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | ||
3 | 6 | 0 | 0 | 2 | 0 | 4 | 0 | 0 | ||
4 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | ||
5 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | ||