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Table 4 Number of patients with a positive GPE and/or a successful VAS at different times in the study (T1, T2 and T6).

From: Randomised controlled trial of cervical radiofrequency lesions as a treatment for cervicogenic headache [ISRCTN07444684]

 

T1 (= 8 weeks)

T2 (= 16 weeks)

T6 (= 1 year)

 

Group I

Group II

Total

Group I

Group II

Total

Group I

Group II

Total

n with success (%)

12 (80%)

10 (66,7%)

22 (73,3%)

10 (66,7%)

8 (53,3%)

18 (60%)

8 (53,3%)

7 (46,7%)

15 (50%)

n no success (%)

3 (20%)

4 (26,7%)

7 (23,3%)

2 (13,3%)

5 (33,3%)

7 (23,3%)

2 (13,3%)

3 (20%)

5 (16,7%)

n no data (%)

 

1 (6,7%)

1 (3,3%)

3 (20%)

2 (13,3%)

5 (16,7%)

5 (33,3%)

5 (33,3%)

10 (33,3%)

  1. Group I = Radiofrequency treatment group
  2. Group II = Local injection group