TABLE 6.

Bivariate correlations (Spearman rho) between time spent on different media and time spent sleeping.

	TV	Smartphone	Book	Tablet
Hours of sleep at night	−0.22**	−0.11	0.10	−0.19**
Average wakings	−0.03	0.09	0.006	−0.04
Sleep hours during the day	0.02	−0.04	−0.14*	0.06
Time falling asleep at night	0.19**	0.03	−0.13*	0.05
Time going to bed	0.36**	0.19*	−0.13*	0.06
Child sleep is a problem	0.05	0.16*	0.11	0.02

**p ≤ 0.01; *p ≤ 0.05.