From: The impact of onabotulinumtoxinA on severe headache days: PREEMPT 56-week pooled analysis
Proportion of severity responders, among headache-day frequency non-responders a | |||
OnabotulinumtoxinA/ OnabotulinumtoxinA n = 285 | Placebo / OnabotulinumtoxinA n = 360 | P-value | |
Week 24 | 41.1% | 31.4% | 0.011 |
Week 56 | 64.6% | 65.6% | 0.792 |
Proportion of HIT-6 responders, among severity responders b | |||
OnabotulinumtoxinA/ OnabotulinumtoxinA n = 246 | Placebo / OnabotulinumtoxinA n = 161 | P-value | |
Week 24 | 62.2% | 43.5% | <0.001 |
Week 56 | 74.4% | 72.0% | 0.601 |