Factors related to smartphone addiction in adolescents from a region in Northeastern Brazil.

Adverse effects on the physical and mental health of adolescents associated with excessive smartphone use have been reported. This paper aims to assess adolescent smartphone addiction and related factors in a region in Northeastern Brazil. This cross-sectional study was carried out in six State-run Professional Education Schools in Fortaleza, Ceará, Brazil, from September to October 2019 with 286 adolescents aged 15-19 years who completed five data collection instruments.