Fig. 2

Mean minutes per day spent using (a) smartphones, (b) tablets and (c) all devices combined. Legend. Total screen time includes the use of television, computer, electronic video games, smartphone, and tablet. Data presented for total screen time (weekdays + weekend) by children’s age, gender, and socioeconomic position defined by the father’s education (low, medium, high). Data for Portugal, 2016/2017. Grey area marks the mean min/day for total sample, according to gender and age. Darker area in Fig. 2.c defines the recommended guidelines according to age (<60 min for children 3–5 years and < 120 min for children 6 years and above). Error bars are custom Standard Error