Table V.
Relationship between hearing level and type of ossicular chain defect in the 102 patients who showed ossicular chain lesions.
| Ossicular chain condition (n) | AC (SD) | BC (SD) | ABG (SD) |
|---|---|---|---|
| Malleus (3) | 48 (18) | 18 (5) | 30 (15) |
| Incus (48) | 48 (18) | 23 (14) | 25 (10) |
| Stapes (3) | 58 (6) | 29 (8) | 29 (8) |
| Malleus-incus (11) | 49 (22) | 24 (12) | 25 (13) |
| Incus-Stapes (26) | 53 (16) | 24 (17) | 30 (15) |
| Malleus-Incus-Stapes (11) | 71 (18) | 39 (30) | 32 (16) |
| p | <0.0001* | <0.05* | <0.05* |
AC = air conduction; BC = bone conduction; ABG = air-bone gap. Values, expressed in dB, represent the average thresholds at 0.5-1-2-4 kHz at pure-tone audiometry; standard deviation (SD) in brackets. Differences are significant by chi-square test (*).