Table 5. Postoperative hearing gain, according to the status of mastoid cavity
| Diploic mastoid cavity (n=16) | Sclerotic mastoid cavity (n=24) |
CWUTM & MO (n=8) | CWUTM (n=7) | p-value | CWUTM & MO (n=8) | CWUTM (n=9) | p-value |
Preoperative AC PTA | 39.58 ±8.9 | 35 ±8.26 | 0.495 | 45 ±10.92 | 42.9 ±17.37 | 0.720 |
Postoperative AC PTA | 27.5±12.37 | 21.25±11.22 | 0.605 | 36.91 ±14.95 | 33.19 ±23.9 | 0.642 |
Δ AC PTA | 12.08±12.21 | 13.75±9.66 | 0.691 | 8.08±13.17 | 9.72± 10.53 | 0.755 |
Values are presented as mean and standard deviation. CWUTM : Tympanomastoidectomy, MO : Mastoid Obliter-ation, AC PTA : Air Conduction Prue Tone Average, Δ AC PTA : Preoperative PTA-Postoperative PTA