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Table 2 Change in attack frequency (mean ± SD (range)) between baseline and 12 months post-microstimulator insertion

From: Sphenopalatine ganglion stimulation for cluster headache, results from a large, open-label European registry

Analysis

All patients

Chronic patients only

Episodic patients only

Baseline frequency (attacks/week)

12 month frequency (attacks/week)

Baseline frequency (attacks/week)

12 month frequency (attacks/week)

Baseline frequency (attacks/week)

12 month frequency (attacks/week)

All patients

25.2 ± 20.3 (0–96)

14.4 ± 17.9 (0–70)

24.3 ± 18.2 (0–84)

14.9 ± 18.1 (0–70)

34.3 ± 37.7 (7–96)

9.1 ± 13.6 (0–30)

p < 0.0001, n = 85

p < 0.0001, n = 78

p = 0.1094, n = 7

Frequency responders

26.7 ± 22.4 (3–96)

3.3 ± 6.3 (0–28)

24.7 ± 19.1 (3–84)

2.9 ± 5.4 (0–25)

30.0 ± 37.8 (7–96)

10.0 ± 14.8 (0–30)

p < 0.0001, n = 48

p < 0.0001, n = 43

p = 0.0625, n = 5