The effects of a mobile app-delivered intervention in people with symptomatic hand osteoarthritis: a pragmatic randomized controlled trial.

"Conflicts of interest.—Pablo Rodríguez Sánchez-Laulhé, Alejandro Suero-Pineda, and Jesús Blanquero have been members of the ReHand project since 2016 and are part of the spin-off (Healthinn, Seville, Spain) that conceived, designed, and developed the CareHand app."

"Funding.— This study is part of the CareHand project, which has received funding from the Fundación Pública Andaluza Progreso y Salud , Consejería de Salud y Consumo , Junta de Andalucía , Spain (reference code AP-0149-2017 )."

"This was a pragmatic, multi-center, and two-group parallel randomized controlled trial planned to conform to the CONSORT guidelines and the ethical principles of the Helsinki Declaration. The study was approved by the Biomedical Research Committee of Andalusia, Spain (PI_RH_2018) and registered prior to initiation at ClinicalTrials.gov (NCT04263974, only the information referring to hand OA is pertinent to the study). All participants provided written informed consent."