Caring for the 'Heads-Down Generation': Screen Time and Physical Health Complaints Among Adolescents in Poland.

In addition, only among girls was a significant association confirmed between watching video materials and the severity of complaints, whereas among boys this relationship did not reach statistical significance.

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It was found that, after adjusting for other socio-demographic factors (gender, school cohort, place of residence, and family affluence): The severity of all symptoms was most strongly associated with time spent on social media, with the strongest associations observed for dizziness and back pain; The weakest associations were observed between the severity of the analyzed symptoms and time spent watching TV or videos; for several symptoms this relationship was not statistically significant (headache, dizziness) or was borderline significant (sleeping difficulties); The goodness-of-fit of the individual GLMs adjusted for four socio-demographic factors ranged from 5.1% (neck or shoulder pain) to 11.8% (dizziness); The goodness-of-fit of the GLMs including only the four screen-time variables as covariates ranged from 3.2% (neck or shoulder pain and eye strain) to 6.3% (dizziness).

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