Table 3 Frequency and type of previous migraine prevention in EFF population (N = 302)

Patients with preventive treatment

139 (46.0)

Number of therapeutic trials/drugs used

1–2

3–4

5–10

>10

Beta blockers

115 (82.7)

7 (5.0)

1 (0.7)

1 (0.7)

Ca²⁺-channel blockers

37 (26.6)

1 (0.7)

Anticonvulsants

23 (16.5)

Antidepressives

43 (30.9)

2 (1.4)

1 (0.7)

Other

14 (10.1)

3 (2.2)

1 (0.7)