Table 1 Demographic and clinical characteristics

Age, y

49.36 ± 11.58

53.30 ± 8.66

47.77 ± 9.24

F = 1.74, P = 0.182

Sex (male / female), n

22/23

12/11

8/14

χ² = 1.31, P = 0.520

Duration of illness, y

–

5.74 ± 3.35

4.97 ± 2.09

t = 0.92, P = 0.365

Side affected (L/R), n

–

9/14

10/12

χ² = 0.18, P = 0.668

VAS pain rating

–

5.41 ± 2.06

4.48 ± 1.54

t = 1.65, P = 0.106

SF-MPQ-Total

–

13.13 ± 4.99

12.50 ± 4.19

t = 0.46, P = 0.650

 SF-MPQ-Sensory

–

9.87 ± 4.45

6.77 ± 3.87

t = 2.48, P = 0.017

 SF-MPQ-Affective

–

3.26 ± 2.36

5.72 ± 1.75

t = 3.97, P < 0.001

 Carbamazepine dose, mg/d

–

9.13 ± 5.24

6.13 ± 3.26

t = 2.29, P = 0.027