Fig. 1.

Preference score distribution in ibuprofen versus comparator cohorts. Illustrative preference score distributions for ibuprofen versus comparator user cohorts from the February to October 2020 enrolment window, Open Claims database. Preference scores are a transformation of propensity scores, and a propensity score is the probability a patient received the target drug over the comparator drug, given the patient’s baseline covariates. ns-NSAIDs non-selective non-steroidal anti-inflammatory drugs