Chronic otitis media and middle ear variants: Is there relation?

Table 2 Comparison the frequency of the variants’s side between case and control groups, n (%)

	Case (n = 500)	Control (n = 500)	P value
Koerner’s septum
Right	36 (46.8)	31 (33.3)	0.057
Left	29 (37.7)	34 (36.6)
Bilateral	12 (15.6)	28 (30.1)
Facial canal dehiscence
Right	68 (35.4)	49 (23.8)	0.003
Left	84 (43.8)	85 (41.3)
Bilateral	40 (20.8)	72 (35)
High jugular bulb
Right	39 (42.9)	10 (50)	0.763
Left	40 (44)	7 (35)
Bilateral	12 (13.2)	3 (15)
Jugular dehiscence
Right	8 (61.5)	3 (50)	0.812
Left	4 (30.8)	2 (33.3)
Bilateral	1 (7.7)	1 (16.7)
Jugular diverticulum
Right	3 (75)	0 (0)	---
Left	1 (25)	0 (0)
Bilateral	0 (0)	0 (0)
Anterior located sigmoid sinus
Right	26 (60.5)	10 (62.5)	0.547
Left	14 (32.6)	6 (37.5)
Bilateral	3 (7)	0 (0)
Deep tympanic recess
Right	0 (0)	0 (0)	---
Left	0 (0)	0 (0)
Bilateral	0 (0)	0 (0)

P value was obtained from Pearson Chi Square test.