Temporal Bone Pneumatization and Pulsatile Tinnitus Caused by Sigmoid Sinus Diverticulum and/or Dehiscence

Table 2

Comparison of temporal bone pneumatization grade by gender in control group.

Pneumatization grade	Gender (number of ears)		Statistical analysis
	Male	Female
I	12	4	1.157	0.775
II	39	14
III	94	47
IV	273	121
Total	418	186