Table 6.

Exploratory models of multivariate logistic regression related with poor academic performance (dependent variable)

Internet	Coefficient	OR (CI 95 %)	p
Female	−0.682	0.51 – 0.43–0.60)	<0.001
Good relationship with family	−0.567	0.57 – 0.45–0.71)	<0.001
Binge drinking	0.398	1.49 1.20–1.85)	<0.001
Cannabis	0.485	1.62 (1.27–2.09)	<0.001
Smoking	0.820	2.27 (1.78–2.90)	<0.001
After-school activities
1 day	−0.760	0.47 (0.33–0.66)	<0.001
2 days	−0.702	0.50 (0.40–0.62)	<0.001
3 days	−0.833	0.44 (0.36–0.53)	<0.001
Problematic use of Internet
Occasional problems	0.219	1.25 (1.04–1.49)	0.016
Frequent problems	0.299	1.348 (1.053–1.727)	0.018
Constant	−0.554	0.58	<0.001
Mobile phones	Coefficient	OR (CI 95 %)	p
Female	−0.787	0.46 (0.39–0.54)	<0.001
Good relationship with family	−0.690	0.50 (0.40–0.63)	<0.001
Binge drinking	0.370	1.45 (1.17–1.79)	0.001
Cannabis	0.374	1.45 (1.13–1.87)	0.003
Smoking	0.843	2.32 (1.83–3.00)	<0.001
After-school activities
1 day	−0.733	0.48 (0.34–0.67)	<0.001
2 days	−0.658	0.52 (0.42–0.65)	<0.001
3 days	−0.876	0.416 (0.34–0.50)	<0.001
Problematic use of mobile phone
Occasional problems	0.611	1.843 (1.52–2.24)	<0.001
Frequent problems	0.273	1.314 (0.82–2.10)	0.254
Constant	−0.359	0.699	0.006
Video games	Coefficient	OR (CI 95 %)	p
Female	−0.704	0.49 (0.41–0.60)	<0.001
Good relationship with family	−0.645	0.53 (0.41–0.67)	<0.001
Binge drinking	0.392	1.48 (1.17–1.87)	0.001
Cannabis	0.406	1.50 (1.15–1.97)	0.003
Smoking	0.954	2.60 (2.00–3.37)	<0.001
After-school activities
1 day	−0.725	0.48 (0.34–0.69)	<0.001
2 days	−0.678	0.51 (0.40–0.64)	<0.001
3 days	−0.906	0.40 (0.33–0.50)	<0.001
Problematic use of video games
Occasional problems	0.042	1.04 (0.85–1.28)	0.692
Frequent problems	0.483	1.62 (1.18–2.23)	0.003
Constant	−0.413	0.66	0.009