Author

Zachary Shahn

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Aug 2026

COVIDTests.gov Test Kits Associated With Expanded SARS-CoV-2 Testing Among Recipients.

Using data from 4549 US adults in a national cohort and a difference-in-differences design, the average treatment effect on the treated was estimated to assess whether receiving tests from COVIDTests.gov increased testing for severe acute respiratory syndrome coronavirus 2.2, with later effects attenuating.

J. Sanborn, M. Robertson, D. Nash et al. · American Journal of Public H... · 0 citations

Open access Jul 2026

The Role of Sick-Quitter Bias in the Association Between Alcohol Use and Anxiety and Depression Symptoms: A Causal Analysis in a U.S. National Cohort

The J-shaped pattern between alcohol use and anxiety and depression symptoms observed in the full cohort was attenuated among participants without poorer baseline health, consistent with sick-quitter bias, and caution against interpreting moderate drinking as beneficial for symptoms of anxiety and depression.

Jenna Sanborn, D. Nash, M. Robertson et al. · medRxiv · 0 citations

Open access Aug 2026

The role of physical activity in shaping the relationship between alcohol use and anxiety and depression symptoms: Findings from a U.S. nationwide cohort

Among healthier adults, physical activity modified the association between moderate alcohol use and symptoms of anxiety or depression on additive and multiplicative scales, suggesting sedentary behavior may amplify mental health vulnerability associated with moderate drinking.

Jenna Sanborn, D. Nash, M. Robertson et al. · medRxiv · 0 citations