Table 2.

Relationship between preoperative neurological symptoms and new postoperative neurological deficits

	All tumors (n = 131)
	Postoperative deficits		X2 test	Logistic analysis
	Y	N	P value	OR	95 % CI	P value
(a)
Spontaneous pain
Y	5	27	0.943	0.923	0.293–2.910	0.891
N	16	83		1
Tenderness
Y	10	48	0.736	1.149	0.426–3.095	0.784
N	11	62		1
Tinel sign
Y	14	63	0.423	1.142	0.387–3.370	0.809
N	7	47		1
Numbness
Y	9	29	0.127	1.975	0.693–5.629	0.203
N	12	81		1

	Small tumors (<4 cm3, n = 60)
	Postoperative deficits		X2 test	Logistic analysis
	Y	N	P value	OR	95 % CI	P value
(b)
Spontaneous pain
Y	4	16	1	0.944	0.217–4.106	0.938
N	8	32		1
Tenderness
Y	6	22	0.796	1.216	0.308–4.798	0.78
N	6	26		1
Tinel sign
Y	9	38	0.754	0.516	0.100–2.659	0.429
N	3	10		1
Numbness
Y	7	13	0.04	4.378	1.088–17.609	0.038
N	5	35		1

Y yes, N no, OR odds ratio, CI confidential interval