Table 2.

The univariate logistic regression analysis of facial nerve outcomes after surgical resection of vestibular schwannoma.

	Statistics	OR, 95% CI	P-value
Gender			0.923
Female	235(59.9%)	1
Male	157(40.1%)	1.021 (0.636, 1.638)
Age(years)	55.33 ± 12.78	1.020 (1.000, 1.039)	0.047*
Duration of symptoms (months)	11.66 ± 4.52	1.004 (0.954, 1.057)	0.872
Preoperative hearing status			0.432
Unserviceable hearing	203 (51.8%)	1
Serviceable hearing	189 (48.2%)	1.205 (0.757, 1.92)
Tumor location			0.828
Left	188 (48%)	1
Right	204 (52%)	0.950 (0.597, 1.511)
Tumor size (mm)	31.64 ± 10.61	1.082 (1.056, 1.109)	<0.001*
CSF cleft sign			<0.001*
No	152 (38.8%)	1
Yes	240 (61.2%)	0.210 (0.128, 0.344)
Cystic features of tumors			0.004*
No	336 (84.9%)	1
Yes	59 (15.1%)	2.358 (1.313, 4.233)
Tumor heterogeneity			0.341
No	110 (28.1%)	1
Yes	282 (71.9%)	1.277 (0.772, 2.114)
IAC width (mm)	7.96 ± 1.53	1.060 (0.911, 1.234)	0.449
Brainstem or cerebellar edema			0.237
No	225 (57.4%)	1
Yes	167 (42.6%)	1.325 (0.831, 2.111)
Facial nerve position
Type1	152 (38.8%)	1	0.002*
Type2	186 (47.4%)	2.417 (1.392, 4.197)	0.002*
Type3	54 (13.8%)	2.955 (1.432, 6.095)	0.003*
Extent of resection
GTR	224 (57.1%)	1	0.395
NTR	124 (31.6%)	1.385 (0.834, 2.301)	0.208
STR	44 (11.3%)	1.375 (0.659, 2.871)	0.397
Surgical time (min)	306.48 ± 83.53	1.002 (0.999, 1.005)	0.133
Learning curve			0.004*
Group1 (Early stage)	186 (47.5%)	1
Group2 (Late stage)	206 (52.5%)	0.495 (0.309, 0.795)

Data presented as mean ± SD or n (%) and the effect sizes were expressed as OR (95% CI), p-value.

^*Statistically significant. OR, odds ratio.