Table 3.

Results related to sleep disorders.

Authors	Results
Wolfe et al., 2014 [86]	- There is a significant and negative correlation between gaming time and sleep duration (p < 0.001). - Older teenagers spent less time video gaming (p < 0.05) and spent more time sleeping (p < 0.05).
Weinstein et al., 2015 [87]	- ADHD group went to sleep later, most of them after midnight. - Results showed a relationship between ADHD, sleep disorder, and Internet/video games addiction.
Cheung et al., 2017 [81]	- A significant and positive association between digital screen use and sleep time during the day (p < 0.05) can be observed. Sleep onset (p < 0.001) was positively related to digital screen use. On the contrary, the relation between the digital screen and sleep time at night is negative (p < 0.001). - There was not any significant correlation between digital screen use and the frequency of night awakenings - An increase in digital screen use was associated with a decrease in the overall amount of sleep.
Chindamo et al., 2019 [77]	- Frequency of video game playing had a significative impact on sleep onset latency (p < 0.005), increasing the time to get to sleep, but the differences in total sleep time were not significative although it was reduced. - Daily tablet or mobile use reduced the total sleep time (p < 0.05) and increased the sleep onset latency (p < 0.05).
Salih et al., 2020 [84]	- Video games predisposed players to sleep disorders (45%).
Nosetti et al., 2021 [78]	- There was a negative correlation between the use of mobile phones (p= 0.03) or the Internet (p < 0.01) and pre-sleep habits and sleep time. - Use of mobile phones (p = 0.003) or the Internet (p = 0.008), playing video games (p = 0.009), and listening to music (p = 0.001) as pre-sleep habits had a positive correlation to late bedtime.