Table 2 Results of statistical analysis of patients with and without chronic otitis media

[Sinus tympani]

  Average Class

1.64 ± 0.78

1.97 ± 0.78

3.82 × 10^− 2

  Posterior depth(a)

0.39 ± 0.52

0.86 ± 0.82

2.79 × 10^− 3

  Lateral depth(b)

0.28 ± 0.66

0.27 ± 0.6

0.39

[Vertical portion of facial nerve]

  Posterior length from EAC(c)

3.08 ± 1.01

3.3 ± 0.72

0.13

  Lateral length from TM(d)

1.16 ± 1.11

0.07 ± 0.27

1.02 × 10^− 4

[High jugular bulb]

  Average Class

0.97 ± 0.85

1.26 ± 1.08

0.2

  Horizontal length from ITM(e)

4.35 ± 2.51

4.41 ± 2.44

0.79

  Vertical length from ITM(f)

2.48 ± 1.27

3.06 ± 1.37

0.15

[EAC]

  Antero-posterior length of TM(g)

7.63 ± 0.78

8.25 ± 0.71

9.17 × 10^− 5

  Superio-inferior length of TM(h)

7.27 ± 1.08

7.34 ± 1.03

9.38 × 10^− 3

  Angle of ACOH(i)

166.6 ± 15.47

165.45 ± 15.73

0.72

  Angle of PCOH(j)

163.77 ± 13.11

165.32 ± 13.82

0.61

  Angle of ICOH(k)

147.1 ± 13.62

153.82 ± 13.47

1.62 × 10^− 2