From: Does analgesic overuse matter? Response to OnabotulinumtoxinA in patients with chronic migraine with or without medication overuse
Outcome
WMO
MO
P value
Patients (N)
Mean (95 % CI)
HIT6 score
182
−8.4 (−9.7, −7.1)
178
−6.8 (−8.0, −5.6)
0.08