Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study PopulationAll patients in this study will be 18 years of age or older, will have had at least 6 months (183 days) of continuous baseline data available before entering one of the cohorts, and will be current users of XOI monotherapy (i.e., \> 1 dispensing/prescription of a study XOI in the 183-day baseline period prior to the index date and days' supply extending beyond the index date). The study population will include patients from one primary care database in Italy (Health Search) and another in Spain (Information System for Research in Primary Care \[SIDIAP\]), as well as two US health systems (the HealthCore Integrated Research DatabaseSM \[HIRD\] and Medicare).