Table 1. Description of pain scores according to groups throughout the assessment moments and results of comparisons.

Variable/Moment	Group			P Grup	P moment	P Interaction
	Placebo	Pregabalin 75 mg	Pregabalin 150 mg
VAS				0.007	<0.001	0.166
Pre-op
Mean ± SD	7.9 ± 2	8.8 ± 1.8	8.4 ± 1.5
Median (p25; p75)	8 (6.3; 10)	10 (8; 10)	9 (7; 10)
1 month
Mean ± SD	1.7 ± 2.4	2.9 ± 3.8	2.1 ± 1.8
Median (p25; p75)	0 (0; 4,8)	0 (0; 6.5)	2 (0; 4)
3 months
Mean ± SD	0.4 ± 0.9	3.5 ± 2.8	0.8 ± 1.5
Median (p25; p75)	0 (0; 0)	3 (1; 6.5)	0 (0; 2)
DN4				0.375	<0.001	0.456
Pre-op
Mean ± SD	5.3 ± 2.1	6.2 ± 1.5	6 ± 2.4
Median (p25; p75)	4.5 (4; 7)	7 (5; 7.5)	7 (5; 8)
1 month
Mean ± SD	1.3 ± 1.3	1.5 ± 2	1.8 ± 2
Median (p25; p75)	1 (0; 2)	1 (0; 2.5)	1 (0; 4)
3 months
Mean ± SD	0.6 ± 1.1	1.6 ± 2	0.9 ± 1.3
Median (p25; p75)	0 (0; 1)	1 (0; 3)	0 (0; 2)

EEG with normal distribution and identity connection function, assuming correlation matrix AR(1) between the moments