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Comment & Response
December 25, 2018

Digital Media Use and ADHD Symptoms—Reply

Author Affiliations
  • 1University of Southern California, Los Angeles
  • 2University of California, Los Angeles
JAMA. 2018;320(24):2599-2600. doi:10.1001/jama.2018.18103

In Reply Although unmeasured confounders are possible in any observational study, some confounders mentioned by Drs Sibley and Coxe (eg, sleep problems) could be mediators within a potential causal pathway—that is, media use disrupts sleep, which in turn increases ADHD symptoms. We adjusted for 8 plausible confounders, which did not substantively alter association estimates.1

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