Table 5.
Statistical Significance of Postoperative Clinical Outcomes for Each Half of Sample Population, by Surgeon
| Parameter | First Half | Second Half | P Value |
|---|---|---|---|
| Postoperative CSF leak: | |||
| Surgeon A | 2/5 (40) | 1/5 (20) | 0.49 |
| Surgeon B | 3/11 (27.3) | 0/10 (0) | 0.07 |
| Surgeon C | 0/6 (0) | 0/6 (0) | 1 |
| Surgeon D | 2/6 (33.3) | 0/7 (0) | 0.1 |
| Total | 7/28 (25) | 1/28 (3.6) | <0.05 |
| Meningitis | |||
| Surgeon A | 2/5 (40) | 1/5 (20) | 0.49 |
| Surgeon B | 1/11 (9.1) | 0/10 (0) | 0.33 |
| Surgeon C | 0/6 (0) | 0/6 (0) | 1 |
| Surgeon D | 0/6 (0) | 0/7 (0) | 1 |
| Total | 3/28 (10.7) | 1/28 (3.6) | 0.3 |
| New hormonal deficits | |||
| Surgeon A | 3/5 (60) | 1/5 (20) | 0.2 |
| Surgeon B | 2/11 (18.2) | 1/10 (10) | 0.59 |
| Surgeon C | 0/6 (0) | 1/6 (16.7) | 0.3 |
| Surgeon D | 1/6 (16.7) | 0/7 (0) | 0.26 |
| Total | 6/28 (21.4) | 3/28 (10.7) | 0.28 |
| Permanent diabetes insipidus | |||
| Surgeon A | 2/5 (40) | 0/5 (0) | 0.11 |
| Surgeon B | 2/11 (18.2) | 0/10 (0) | 0.16 |
| Surgeon C | 1/6 (16.7) | 1/6 (16.7) | 1 |
| Surgeon D | 0/6 (0) | 0/7 (0) | 1 |
| Total | 5/28 (17.9) | 1/28 (3.6) | 0.08 |
| Vision improvement | |||
| Surgeon A | 1/1 (100) | 4/4 (100) | 1 |
| Surgeon B | 7/9 (77.8) | 7/7 (100) | 0.18 |
| Surgeon C | 4/4 (100) | 2/3 (66.7) | 0.21 |
| Surgeon D | 1/3 (33.3) | 4/4 (100) | 0.05 |
| Total | 13/17 (76.5) | 17/18 (94.4) | 0.13 |
P value indicates statistically significant.
CSF, cerebrospinal fluid.