Fig. 3
Acute medication use – mean number of claimsa in the 183 days before and after erenumab initiation. aUse of non-migraine specific acute medications (NSAIDs, opioids, and barbiturates) required a migraine diagnosis on or before 7 days of the medication claim to proxy migraine-specific acute medication. Negative binomial model with repeated measure was used. CI, confidence interval; ER, emergency room; IPTW, inverse probability of treatment weighting; NSAID, nonsteroidal anti-inflammatory drug; RR, rate ratio