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Classifying Unstructured Text in Electronic Health Records for Mental Health Prediction Models: Large Language Model Evaluation Study

Nicholas C Cardamone, Mark Olfson, Timothy Schmutte, Lyle Ungar, Tony Liu, Sara W Cullen, Nathaniel J Williams, Steven C Marcus

JMIR Med Inform 2025;13:e65454

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Bots and Misinformation Spread on Social Media: Implications for COVID-19

McKenzie Himelein-Wachowiak, Salvatore Giorgi, Amanda Devoto, Muhammad Rahman, Lyle Ungar, H Andrew Schwartz, David H Epstein, Lorenzo Leggio, Brenda Curtis

J Med Internet Res 2021;23(5):e26933

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Exploring Substance Use Tweets of Youth in the United States: Mixed Methods Study

Robin C Stevens, Bridgette M Brawner, Elissa Kranzler, Salvatore Giorgi, Elizabeth Lazarus, Maramawit Abera, Sarah Huang, Lyle Ungar

JMIR Public Health Surveill 2020;6(1):e16191

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Using Social Media to Track Geographic Variability in Language About Diabetes: Infodemiology Analysis

Heather Griffis, David A Asch, H Andrew Schwartz, Lyle Ungar, Alison M Buttenheim, Frances K Barg, Nandita Mitra, Raina M Merchant

JMIR Diabetes 2020;5(1):e14431

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Content Analysis of Metaphors About Hypertension and Diabetes on Twitter: Exploratory Mixed-Methods Study

Lauren Sinnenberg, Christina Mancheno, Frances K Barg, David A Asch, Christy Lee Rivard, Emma Horst-Martz, Alison Buttenheim, Lyle Ungar, Raina Merchant

JMIR Diabetes 2018;3(4):e11177

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Characterizing Tweet Volume and Content About Common Health Conditions Across Pennsylvania: Retrospective Analysis

Christopher Tufts, Daniel Polsky, Kevin G Volpp, Peter W Groeneveld, Lyle Ungar, Raina M Merchant, Arthur P Pelullo

JMIR Public Health Surveill 2018;4(4):e10834

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Variations in Facebook Posting Patterns Across Validated Patient Health Conditions: A Prospective Cohort Study

Robert J James Smith, Patrick Crutchley, H Andrew Schwartz, Lyle Ungar, Frances Shofer, Kevin A Padrez, Raina M Merchant

J Med Internet Res 2017;19(1):e7

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Using Twitter to Measure Public Discussion of Diseases: A Case Study

Christopher Joseph Weeg, H. Andrew Schwartz, Shawndra Hill, Raina M Merchant, Catalina Arango, Lyle Ungar

JMIR Public Health Surveill 2015;1(1):e6

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Twitter Sentiment Predicts Affordable Care Act Marketplace Enrollment

Charlene A A Wong, Maarten Sap, Andrew Schwartz, Robert Town, Tom Baker, Lyle Ungar, Raina M Merchant

J Med Internet Res 2015;17(2):e51

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Natural Supplements for H1N1 Influenza: Retrospective Observational Infodemiology Study of Information and Search Activity on the Internet

Shawndra Hill, Jun Mao, Lyle Ungar, Sean Hennessy, Charles E. Leonard, John Holmes

J Med Internet Res 2011;13(2):e36

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