Table 6.

Multivariate associations of demographic and health behaviours with smartphone addiction (n = 1,519)

	Smartphone addiction according to the SAS-SV
	OR (95% CI)	p
Age
15–16 years	Ref.
17–18 years	0.86 (0.64–1.15)	.31
19–20 years	0.59 (0.37–0.94)	.03
21 years or older	0.50 (0.29–0.87)	.02
Immigrant background
No immigrant background	Ref.
One parent born outside Switzerland	1.13 (0.75–1.71)	.56
Both parents born outside Switzerland	2.21 (1.55–3.15)	<.01
Hours of moderate to vigorous physical activity per week	0.95 (0.91–0.99)	.02
Perceived stress
Low	Ref.
High	2.14 (1.62–2.83)	<.01

Notes: Multivariate binary logistic regression model. SAS-SV = short version of the Smartphone Addiction Scale for Adolescents.