Adaptive Content Tuning of Social Network Digital Health Interventions Using Control Systems Engineering for Precision Public Health: Cluster Randomized Controlled Trial

Paulo Rocha   ^{1 *} , MSc ;   Diego Pinheiro   ^{2 *} , PhD ;   Rodrigo de Paula Monteiro   ^{2 *} , PhD ;   Ela Tubert   ^{1 *} , BSc ;   Erick Romero   ^{1 *} , MD ;   Carmelo Bastos-Filho   ^{3 *} , PhD ;   Miriam Nuno   ^{4 *} , PhD ;   Martin Cadeiras   ^{1 *} , MD

¹ Division of Cardiovascular Medicine, Department of Internal Medicine, University of California, Davis, Sacramento, CA, United States

² International School, Catholic University of Pernambuco, Recife, Brazil

³ Polytechnic School of Pernambuco, University of Pernambuco, Recife, Brazil

⁴ Division of Biostatistics, Department of Public Health Sciences, University of California Davis, Davis, CA, United States

*all authors contributed equally