A rapid review of medication taking ('adherence') among patients with rheumatic diseases during the COVID-19 pandemic.

Medication taking among individuals with rheumatic diseases during the COVID-19 pandemic varies globally. Unclear reporting and extensive variation in research methods between studies creates barriers to research replication, comparison, and generalization to specific patient populations. Future research in this area should use consistent and transparent approaches to defining and measuring medication taking problems in order to ensure findings appropriately describe the epidemiology of medication adherence and have the potential to identify modifiable targets for improving patient care.