Published on in Vol 11 (2023)

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/45414, first published .
Usage and Daily Attrition of a Smartphone-Based Health Behavior Intervention: Randomized Controlled Trial

Usage and Daily Attrition of a Smartphone-Based Health Behavior Intervention: Randomized Controlled Trial

Usage and Daily Attrition of a Smartphone-Based Health Behavior Intervention: Randomized Controlled Trial

Erlendur Egilsson   1 , CandPsych ;   Ragnar Bjarnason   2, 3 , MD, PhD ;   Urdur Njardvik   1 , PhD

1 Department of Psychology, University of Iceland, Reykjavik, Iceland

2 Department of Pediatrics, University of Iceland, Reykjavik, Iceland

3 Faculty of Medicine, University of Iceland, Reykjavik, Iceland

Corresponding Author:

  • Erlendur Egilsson, CandPsych
  • Department of Psychology
  • University of Iceland
  • Saemundargata 12
  • Reykjavik, 102
  • Iceland
  • Phone: 354 5254240
  • Fax: 354 5255802
  • Email: erlendu@hi.is