Table 7:

Comparing mean labyrinthitis ossificans grade by surgery^{^a}

	Mean (SE)		P Value
	No Surgery (n = 47)	Surgery (n = 11)	P Value
Apical turn of cochlea^{^b}	0.74 (0.24)	1.07 (0.51)	.553
Middle turn of cochlea^{^b}	0.74 (0.23)	1.41 (0.49)	.223
Basal turn of cochlea^{^b}	0.84 (0.23)	2.07 (0.48)	.027
Vestibule	0.30 (0.16)	1.67 (0.33)	.001
Lateral semicircular canal	1.49 (0.15)	3.04 (0.32)	<.001
Posterior semicircular canal	0.99 (0.20)	2.44 (0.43)	.004
Superior semicircular canal	0.75 (0.22)	2.13 (0.45)	.008

↵a LO grade for each structure within the membranous labyrinth is reported stratified by risk factor. P value is from a mixed-effects model.
↵b Analysis is based on 57 ears (47 with no prior temporal bone surgery and 10 with prior temporal bone surgery).