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   ^{9, 10} , PhD ;   Isabel Ruiz-Pérez   ^{9, 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, 9} , PhD

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

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

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

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

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

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

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

⁸ Department of Clinical Epidemiology and Public Health, Biomedical Research Institute Sant Pau, Iberoamerican Cochrane Centre, Barcelona, ES

⁹ CIBER de Epidemiología y Salud Pública, Madrid, ES

¹⁰ Andalusian School of Public Health, Granada, ES

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

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

*these authors contributed equally