Table 2 Patient characteristics stratified by headache days per month
Headache days per month | N | Age, mean (SD) | % Female |
|---|---|---|---|
0–4 headache days | 99 | 53.47 (11.53) | 90.91 |
5–9 headache days | 138 | 50.40 (11.07) | 92.75 |
10–14 headache days | 80 | 51.28 (11.51) | 86.25 |
15–24 headache days | 74 | 47.55 (11.27) | 87.84 |
25–31 headache days | 63 | 48.90 (13.30) | 84.13 |