Table 2:

Comparison of audiometric data in ears for patients with unilateral IAC diverticula in the absence of otosclerosis (N = 22)a

No.bIAC DiverticulumNo IAC DiverticulumDifferencecP Valued
Bone conduction pure tone average2222.5 (13–41)17 (8–35)1 (−4–17).31
    BC 250 Hz (dB)2017.5 (7.5–25)12.5 (7.5–20)2.5 (−5–15).19
    BC 500 Hz (dB)2120 (10–40)15 (10–25)5 (0–20).14
    BC 1000 Hz (dB)2022.5 (10–40)15 (5–27.5)0 (−2.5–25).17
    BC 2000 Hz (dB)1930 (10–50)20 (10–45)0 (−10–15).50
    BC 3000 Hz (dB)1825 (7.5–47.5)20 (10–55)0 (−10–15).63
    BC 4000 Hz (dB)2125 (10–50)35 (15–60)0 (−5–5).97
Air conduction pure tone average2231 (20–75)20 (9–41)4 (1–29).06
    AC 250 Hz (dB)2222.5 (15–60)17.5 (10–35)2.5 (−5–20).19
    AC 500 Hz (dB)2225 (15–75)22.5 (10–40)2.5 (−5–20).30
    AC 1000 Hz (dB)2227.5 (15–75)20 (5–40)5 (0–30).06
    AC 2000 Hz (dB)2232.5 (15–70)20 (5–50)10 (0–30).10
    AC 3000 Hz (dB)2037.5 (15–60)20 (12.5–62.5)5 (−5–25).34
    AC 4000 Hz (dB)2240 (20–85)37.5 (15–70)5 (−5–40).22
Air-bone gap225 (0–12)0 (0–5)2 (0–9).37
    Word recognition (%)17100 (85–100)100 (95–100)0 (−15–0).55
  • Note:—AC indicates air conduction; BC, bone conduction.

  • a Data are median and IQR.

  • b Summarized for a subset of patients with data for both ears.

  • c Calculated as IAC minus non-IAC.

  • d Determined using Wilcoxon signed rank tests.