Table 3. Correlation between postoperative CSF leakage and material for reconstruction by grade.
| Intraop CSF leakage | Postop CSF leakage | Rate (%) | p value | odd ratio | |
|---|---|---|---|---|---|
| Grade 1 | 135 | 6 | |||
| Buttress | 80 | 1 | 1.3 | 0.041* | 0.127 |
| Fat | 54 | 3 | 5.6 | 0.683 | 1.529 |
| SDS | 34 | 1 | 2.9 | 1 | 0.582 |
| Fat + Buttress | 33 | 1 | 3.0 | 1 | 0.606 |
| SDS + Buttress | 26 | 0 | 0.0 | 0.596 | 0.798 |
| Grade 2 | 83 | 7 | |||
| Buttress | 65 | 6 | 9.2 | 1 | 1.729 |
| Fat | 40 | 1 | 2.5 | 0.111 | 0.158 |
| SDS | 35 | 5 | 14.3 | 0.126 | 3.833 |
| Fat + Buttress | 31 | 0 | 0.0 | 0.042* | 0.592 |
| SDS + Buttress | 30 | 5 | 16.7 | 0.092 | 5.1 |
| Grade 3 | 42 | 8 | |||
| Buttress | 33 | 5 | 15.2 | 0.336 | 0.357 |
| Fat | 14 | 1 | 7.1 | 0.233 | 0.231 |
| SDS | 22 | 4 | 18.2 | 1 | 0.889 |
| Fat + Buttress | 13 | 0 | 0.0 | 0.043* | 0.618 |
| SDS + Buttress | 20 | 4 | 20.0 | 1 | 1.125 |
*P<0.05 for the test.
SDS, synthetic dural substitute.