Table 4.

Univariate analysis demonstrating the association between tumor characteristics and cranial nerve deficits

112 Surgeries in 101 patients: 96 retrosigmoid, 16 subtemporal/pterional	Cranial nerve deficits preoperatively vs. at follow-up
	Preop. with CN deficits	p-value	CN status unchanged	CN status improved	CN status worsening	p-value at follow-up
Age
≤ 60 years [n = 47]	63.8%	.287	46.8%	34%	19.1%	.464
> 60 years [n = 54]	74.1%		38.9%	31.5%	29.6%
Gender
Male [n = 16]	81.3%	.378	56.3%	25.0%	18.8%	.483
Female [n = 85]	67.1%		40.0%	34.1%	25.9%
Two-stage surgery
No [n = 100]	70%	1.0	43%	32%	25%	.293
Yes [n = 12]	75%		66.7%	16.7%	16.7%
Cavernous sinus infiltration
No [n = 89]	68.5%	.448	46.1%	31.5%	22.5%	.711
Yes [n = 23]	78.3%		43.5%	26.1%	30.4%
Tumor size
≤ 10 cm3 [n = 50]	66%	.828	44%	34%	22%	.769
> 10 cm3 [n = 46]	69.6%		39.1%	32.6%	28.3%
WHO grade
WHO grade 1 [n = 99]	69.7%	1.0	47.5%	29.3%	23.2%	.336
WHO grade 2 [n = 12]	75.0%		25%	41.7%	33.3%
Tumor consistency
Soft [n = 69]	68.1%	.528	50.7%	33.3%	15.9%	.038
Firm [n = 43]	74.4%		37.2%	25.6%	37.2%
Tumor surface
Smooth [n = 77]	70.1%	1.0	48.1%	31.2%	20.8%	.466
Cauliflower [n = 35]	71.4%		40%	28.6%	31.4%
Tumor location
Unilateral [n = 85]	70.6%	1.0	48.2%	34.1%	17.6%	.016
Bilateral [n = 27]	70.4%		37%	18.5%	44.4%
Tumor vascularity
Low [n = 81]	69.1%	.651	45.7%	28.4%	25.9%	.679
High [n = 31]	74.2%		45.2%	35.5%	19.4%
Proposed grading system
Type I [n = 59]	67.8%	.560	52.5%	35.6%	11.9%	.010
Type II [n = 10]	90.0%		40.0%	50.0%	10.0%
Type III [n = 27]	70.4%		37.0%	18.5%	44.4%
Type IV [n = 16]	68.8%		37.5%	18.8%	43.8%
Type I [n = 59]	67.8%	.539	52.5%	35.6%	11.9%	.006
All other types [n = 53]	73.6%		37.7%	24.5%	37.7%