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Comment & Response
January 15, 2020

Is There an Association Between Social Media Use and Mental Health? The Timing of Confounding Measurement Matters—Reply

Author Affiliations
  • 1Bloomberg School of Public Health, Department of Mental Health, Johns Hopkins University, Baltimore, Maryland
JAMA Psychiatry. 2020;77(4):438. doi:10.1001/jamapsychiatry.2019.4503

In Reply In our study,1 we used 3 waves of data from the longitudinal Population Assessment of Tobacco and Health study to show that adolescents who report more frequent social media use report greater symptoms of psychopathology 1 year later. In their letter, Keyes and Kreski replicated our findings. They then showed that, after further adjusting for psychopathology measured concurrently with social media use, the prospective association we identified disappears, except for among the most frequent users of social media use.

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