Figure 4.

Prevalence–rank plot “other headache syndromes.” Clusters of interest for PheCode “Other headache syndromes.” The Prevalence-rank plot depicts the proportion of patients in the cluster with the code of interest on the y-axis and the prevalence rank of the code within the cluster on the x-axis. The prevalence of PheCode 339 (“Other headache syndromes”) in the entire set was 0.27 (dotted line). We labeled the clusters (arbitrary cluster identifier) where the prevalence of this code was higher than its overall prevalence and where the code was present in the clusters' top 10 most prevalent codes.