. 2018 Feb 5;71(Suppl 2):1190–1196. doi: 10.1007/s12070-018-1259-x

Table 5.

Correlation between mastoid pneumatization and type of middle ear disease

	Diagnosis	Primary sclerotic/diploic and contracted mastoid(percentage)	Secondary sclerosis in well-pneumatized mastoid) (percentage)	Total	X2-value
Pars flaccida squamous disease	Inactive (squamous) pars flaccida com (retraction)	2 (66.7%)	1 (33.3%)	3	1.28 P = 0.25, NS
Pars flaccida squamous disease	Active (squamous) pars flaccida COM (with cholesteatoma)	10 (43.5%)	13 (56.5%)	23	1.28 P = 0.25, NS
Total	Pars flaccida squamous COM (inactive and active)	12 (46.15%)	14 (53.85%)	26
Pars tensa squamous disease	Inactive (squamous) pars tensa COM (retraction)	8 (38.1%)	13 (61.9%)	21	11.52 P = 0.0007, S
Pars tensa squamous disease	Active (squamous) pars tensa COM (with cholesteatoma)	7 (38.9%)	11 (61.1%)	18	11.52 P = 0.0007, S
Total	Pars tensa squamous COM (inactive and active)	15 (38.46%)	24 (61.54%)	39
	Grand total	27 (41.54%)	38 (58.46%)	65	8.00 P = 0.004, S