In this study, we used the clinical information provided in the COVID-19 protocols of the largest university hospitals in Andalusia. In Andalusia, hospitals are stratified into 4 categories according to service area and number of medical and surgical specialties [6]: (1) regional university hospitals (referral hospital in the whole autonomous community with all specialties available); (2) specialized university hospitals (referral hospital in a province and with wide number of specialties available); (3) basic general hospitals (referral hospital in a region and with all basic specialties available); (4) highly-specialized hospitals (referral hospital in a local area and with all basic specialties available). We included 6 regional university hospitals and 9 specialized university hospitals: Hospital Universitario Reina Sofía (Córdoba), Hospital Universitario Juan Ramón Jiménez (Huelva), Hospital Universitario Virgen del Rocío (Sevilla), Hospital Universitario Virgen Macarena (Sevilla), Hospital Virgen de Valme (Sevilla), Complejo Hospitalario Torrecárdenas (Almería), Hospital Universitario de Jerez de la Frontera (Jerez de la Frontera), Hospital Universitario Puerta del Mar (Cádiz), Hospital de Puerto Real (Puerto Real), Hospital Universitario Virgen de las Nieves (Granada), Hospital Universitario San Cecilio (Granada), Complejo Hospitalario de Jaén (Jaén), Hospital Universitario Virgen de la Victoria (Málaga), Hospital Costa del Sol (Marbella), and Hospital Regional Universitario de Málaga (Málaga). This study was approved by the Institutional Research Ethics Committee of Málaga on 1 May 2020 (Ethical code: PI-Prot-0520)