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Table 3 The main factors affecting rate of GTR

From: Retrosigmoid-transtentorial approach for petroclival meningiomas: operative technique and clinical outcome

Relative factors GTR/N % χ2 p
Size (mm) 10 ~ 24 4/4 100 8.083 0.018
25 ~ 44 24/28 85.7   
≥45 18/32 56.3   
Subtype Clivus 26/28 92.9 11.201 0.004
Petroclival 8/13 61.5   
Sphenopetroclival 12/23 52.2   
Cavernous Sinus Invasion 8/17 47.1 7.052 0.008
No invasion 38/47 80.9   
Brainstem Compression Mild 21/24 87.5 10.584 0.005
Moderate 15/23 65.2   
Severe 10/17 58.8   
Consistency Soft 12/14 85.7 5.260 0.072
moderate 20/25 80.0   
Tough 14/25 56.0