Central post-stroke pain: predictors and relationship with magnetic resonance imaging and somatosensory evoked potentials

Table 2 (MRI) findings according to side of lesion and site of pain

Variables	Thalamic (n = 11)	Extra-thalamic (n = 12)	Used test	p value
Variables	No. (%)	No. (%)	Used test	p value
Side of lesion
Right side	3 (27.3%)	8 (66.7%)	χ² = 4.0	0.048*
Left side	8 (72.7%)	4 (33.3%)	χ² = 4.0	0.048*
Site of pain
Hemi-body including face	2 (18.2%)	6 (50.0%)	Fisher	0.048*
Hemi-body not including face	7 (63.6%)	3 (25.0%)	Fisher	0.039*
Lower limbs	2 (18.2%)	1 (8.3%)	Fisher	0.59
Upper limbs	0 (0.0%)	2 (16.7%)	Fisher	0.48

*Significant p value at < 0.05, Fisher Fisher exact probability test, χ² chi-square test