Table 3:

Associations between IAC diverticulum or otosclerosis and hearing loss

CharacteristicIAC Diverticulum Only (n = 43)Otosclerosis Only (n = 39)IAC Diverticulum + Otosclerosis (n = 7)P Value
Hearing loss (No.) (%)<.01a
    None4 (9%)7 (18%)1 (14%)
    SNHL27 (63%)10 (26%)2 (29%)
        PTA (average) (range) (dB)53.5 (10.6–120)55.3 (16.9–115)97.5 (94.4–100.6)
    CHL (No.) (%)None13 (33%)1 (14%)
    Mixed (No.) (%)12 (28%)9 (23%)3 (43%)
  • Note:—PTA indicates pure tone average.

  • a P value was calculated for comparison of groups with the Fisher exact test.