Table 1 Demographics and clinical characteristics of included patients with trigeminal neuralgia (n = 115)

 Male

53 (46)

37–56

 Female

62 (54)

44–63

 Age at TN onset, mean, years

55.4

53.0–57.8

 Age at operation, years

62.0

59.6–64.4

 Above 70 years of age at operation

44 (38)

29–47

 Duration of TN at time of operation, mean and range, years

7.1

0–40

 Long duration (> 2 years) of TN at time of surgery

96 (83)

75–90

 Right-sided pain

67 (58)

49–67

 Left-sided pain

48 (42)

33–51

 Bilateral pain

0

–

 Concomitant continuous pain^a

61 (54)

44–63

 Classical TN

70 (61)

51–70

 Idiopathic TN

45 (39)

30–49

 Periods of remission

60 (55)

45–64

 V1

5 (4)

1–10

 V2

16 (14)

10–24

 V3

26 (23)

16–32

 V1 + V2

13 (11)

6–19

 V2 + V3

39 (34)

26–44

 V1 + V2 + V3

16 (14)

8–22

 Sensory abnormalities at neurological examination^a

45 (40)

31–49

 History of ablative neurosurgical procedures

1 (1)

0–5

 Response to sodium channel blockers

101 (88)

80–93