Table 3.

Full regression models for mental health problems and screen time as predictors of substance use.

		p			p
Age	0.4 (0.3, 0.4)	<0.001	Age	0.4 (0.3, 0.4)	<0.001
Gendera	−0.3 (-0.5, 0.0005)	0.05	Gender	−0.3 (-0.5, −0.01)	0.039
Depression risk	1.3 (0.9, 1.7)	<0.001	Anxiety risk	0.1 (−0.3, 0.6)	0.533
Average screen time			Average screen time
1–2 h	0.1 (−0.4, 0.6)	0.799	1–2 h	0.1 (−0.4, 0.5)	0.803
3–4 h	0.4 (−0.1, 0.9)	0.094	3–4 h	0.4 (−0.1, 0.9)	0.086
> 4 h	0.5 (0.04–1.0)	0.034	> 4 h	0.5 (0.04–1.0)	0.033
GAD 7 category			PHQ 9 category
Mild anxiety	0.2 (−0.4, 0.7)	0.482	Mild depression	0.7 (0.2, 1.2)	0.006
Moderate anxiety	0.3 (−0.4, 0.9)	0.413	Moderate depression	1.8 (1.2, 2.4)	<0.001
Severe anxiety	0.9 (0.3, 1.5)	0.005	Severe depression	2.6 (1.9, 3.3)	<0.001

^aMales were coded as 0, females as 1, thus negative coefficients indicate increased use in males.