Association between Information and Communication Technology Usage and the Quality of Sleep among School-Aged Children during a School Week

<table>Mean HRV (SDNN, ms) during a school day and at night.</table>

Sleep Disorders

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Figure 1

Figure 1: Association between Information and Communication Technology Usage and the Quality of Sleep among School-Aged Children during a School Week 

Figure 1 | Association between Information and Communication Technology Usage and the Quality of Sleep among School-Aged Children during a School Week 