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Intention to treat analysis of primary efficacy parameters in 55 participants during treatment periods of 12 weeks. Figures are means (SD)
| Lisinopril | Placebo | Mean % reduction (95% CI) | |
|---|---|---|---|
| Hours with headache | 138 (130) | 162 (134) | 15 (0 to 30) |
| Days with headache | 20.7 (14) | 24.7 (11) | 16 (5 to 27) |
| Days with migraine | 14.6 (10) | 18.7 (9) | 22 (11 to 33) |
