A Mobile Phone–Based Intervention to Reduce Mental Health Problems in Health Care Workers During the COVID-19 Pandemic (PsyCovidApp): Randomized Controlled Trial

Maria Antònia Fiol-DeRoque   ^{1, 2 *} , PhD ;   Maria Jesús Serrano-Ripoll   ^{1, 2, 3 *} , PhD ;   Rafael Jiménez   ^{1, 3} , PhD ;   Rocío Zamanillo-Campos   ^{1, 2, 4} , PhD ;   Aina María Yáñez-Juan   ^{1, 5} , PhD ;   Miquel Bennasar-Veny   ^{1, 6} , PhD ;   Alfonso Leiva   ^{1, 2, 7} , PhD ;   Elena Gervilla   ^{1, 3} , PhD ;   M Esther García-Buades   ³ , PhD ;   Mauro García-Toro   ¹ , PhD, MD ;   Pablo Alonso-Coello   ^{8, 9} , PhD, MD ;   Guadalupe Pastor-Moreno   ^{8, 10} , PhD ;   Isabel Ruiz-Pérez   ^{8, 10} , PhD, MD ;   Carolina Sitges   ^{1, 3, 11} , PhD ;   Javier García-Campayo   ^{7, 12} , PhD, MD ;   Joan Llobera-Cánaves   ^{1, 2, 7} , PhD, MD ;   Ignacio Ricci-Cabello   ^{1, 2, 8} , PhD

¹ Health Research Institute of the Balearic Islands, Palma de Mallorca, Spain

² Primary Care Research Unit of Mallorca, Balearic Islands Health Services, Palma de Mallorca, Spain

³ Department of Psychology, University of the Balearic Islands (UIB), Palma de Mallorca, Spain

⁴ Department of Health, Valencian International University (VIU), Valencia, Spain

⁵ Research Group on Global Health & Human Development, University of the Balearic Islands, Palma de Mallorca, Spain

⁶ Department of Nursing and Physiotherapy, University of the Balearic Islands, Palma de Mallorca, Spain

⁷ Primary Care Prevention and Health Promotion Research Network, Madrid, Spain

⁸ CIBER de Epidemiología y Salud Pública, Madrid, Spain

⁹ Department of Clinical Epidemiology and Public Health, Biomedical Research Institute Sant Pau, Iberoamerican Cochrane Centre, Barcelona, Spain

¹⁰ Andalusian School of Public Health, Granada, Spain

¹¹ Department of Psychology, Research Institute of Health Sciences, Palma de Mallorca, Spain

¹² Aragon Institute for Health Research, Miguel Servet University Hospital, Zaragoza, Spain

*these authors contributed equally