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Table 2 Frequencies and percentages of responders (patients that returned episodic) at the end of treatment (T2), after 4 months (T3) and at 1 year (T4)

From: Biofeedback in the prophylactic treatment of medication overuse headache: a pilot randomized controlled trial

Responders

Biofeedback group

Control group

T2

n (%)

10 (67 %)

2 (17 %)

T3

n (%)

12 (80 %)

3 (25 %)

T4

n (%)

7 (47 %)

2 (17 %)