Table 2.
Summary Statistics of Historic Migraine Characteristics
| Count, Except for Age | Active | % | Placebo | % | Total | % | |
|---|---|---|---|---|---|---|---|
| Age | Average (years) | 44.2 (43.4) | N/A | 44.6 (46.0) | N/A | 44.4 (44.7) | N/A |
| Gender | Male | 4 (1) | 22 | 3 (1) | 17 | 7 (2) | 19 |
| Female | 14 (4) | 78 | 15 (4) | 83 | 29 (8) | 81 | |
| Recurrent headache since | <20 years | 5 (0) | 28 | 5 (0) | 28 | 10 (0) | 28 |
| ≥20 years | 13 (1) | 72 | 13 (0) | 72 | 26 (1) | 72 | |
| Attacks per week | <1 | 9 (1) | 50 | 9 (0) | 50 | 18 (1) | 50 |
| ≥1 | 7 (0) | 39 | 7 (2) | 39 | 14 (2) | 39 | |
| Variable attack frequency | 2 (0) | 11 | 2 (0) | 11 | 4 (0) | 11 | |
| Duration of attack | ≤1 day | 9 (2) | 50 | 6 (4) | 33 | 15 (6) | 42 |
| 1–3 days | 5 (2) | 28 | 7 (1) | 39 | 12 (3) | 33 | |
| ≥3 days | 2 (0) | 11 | 1 (0) | 6 | 3 (0) | 8 | |
| Variable attack frequency | 2 (0) | 11 | 4 (0) | 22 | 6 (0) | 17 | |
| Predominantly unilateral pain | Yes | 16 (1) | 89 | 15 (0) | 83 | 31 (1) | 86 |
| No | 2 (1) | 11 | 3 (0) | 17 | 5 (1) | 14 | |
All participating patients had a diagnosed migraine according to the International Classification of Headache Disorders 2nd edition. Some patients did not fully fill out the pretreatment questionnaires. Data pertaining to these 10 patients were completed through telephone interviews during the study. In the columns above, the number of patients whose data were completed through such interviews is indicated within parentheses.