Ascertainment of covariates
RECRUITMENT
Sociodemographic data (age, sex, education level, marital status), health status, smoking habits, and alcohol consumption were self-reported by the participants at baseline and during the annual follow-up. The baseline data for these variables along with the participants’ recruitment center (location) were obtained for use as covariates.In the PREDIMED-Plus, lifestyle information including adherence to an energy-reduced Mediterranean diet [Since exposure to angiotensin-converting enzyme (ACE) inhibitor drugs is known to affect COVID-19 risk [