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Table 1 Patients characteristics and clinical outcome

From: Central modulation in cluster headache patients treated with occipital nerve stimulation: an FDG-PET study

Patients

Age

Cluster &

ONS side

Average number of attacks/

last 4 weeks

% reduction

in attack frequency

ONS

responder

   

BEFORE

ONS

24-30 mths

ONS

24-30 mths

ONS

 

Group 1

        

1

48

R

131.6

98.0

26

N

2

46

L

107.6

7.6

93

Y

3

32

R

32.4

3.2

90

Y

4

53

L

28.0

0.0

100

Y

   

BEFORE

ONS

1 month

ONS

6 months

ONS

1 month

ONS

6 months

ONS

 

Group 2

        

5

31

R

28.0

7.2

0.0

74

100

Y

6

60

R

28.0

7.2

2.8

74

90

Y

7

47

L

112.0

92.4

116.4

17.5

-4

N

8

50

R

42.0

4.4

0.0

80

100

Y

9

31

L

56.0

2.0

0.0

97

100

Y

10

44

L

16.4

13.2

11.2

22

33

N

  1. ONS: occipital nerve stimulation, R: right, L: left, Y: yes, N: no.