Table 1.

Characteristics of 114 patients with chronic daily headache

CharacteristicsResults
Age, y, mean ± SD38.9 ± 9.7
Female sex, n (%)103 (90.4)
Body mass index, kg/m2, mean ± SD26.4 ± 5.7
Headache history, mo, n (%)
7–124 (3.5)
13–6019 (16.7)
>6091 (79.8)
Chronic daily headaches, n (%)
Transformed migraine78 (68.4)
Chronic tension-type headache36 (31.6)
Analgesic overuse, n (%)53 (46.5)