Fig. 5

Health care resource utilization – mean number of visits in the 183 days before and after erenumab initiation. ^aNeurologist or headache specialist visits are a subset of the office visits. 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