Vol 23, No 2 (2021): February

Negative and Positive Affect Regulation in a Transdiagnostic Internet-Based Protocol for Emotional Disorders: Randomized Controlled Trial

Amanda Díaz-García, Alberto González-Robles, Azucena García-Palacios, Javier Fernández-Álvarez, Diana Castilla, Juana María Bretón, Rosa María Baños, Soledad Quero, Cristina Botella

J Med Internet Res 2021 (Feb 01); 23(2):e21335

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Two Web-Based and Theory-Based Interventions With and Without Brief Motivational Interviewing in the Promotion of Human Papillomavirus Vaccination Among Chinese Men Who Have Sex With Men: Randomized Controlled Trial

Zixin Wang, Joseph T F Lau, Tsun Kwan Mary Ip, Yebo Yu, Francois Fong, Yuan Fang, Phoenix K H Mo

J Med Internet Res 2021 (Feb 02); 23(2):e21465

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Adoption of Digital Health Technologies in the Practice of Behavioral Health: Qualitative Case Study of Glucose Monitoring Technology

Suepattra G May, Caroline Huber, Meaghan Roach, Jason Shafrin, Wade Aubry, Darius Lakdawalla, John M Kane, Felicia Forma

J Med Internet Res 2021 (Feb 03); 23(2):e18119

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Telehealth in the COVID-19 Era: A Balancing Act to Avoid Harm

J Jeffery Reeves, John W Ayers, Christopher A Longhurst

J Med Internet Res 2021 (Feb 01); 23(2):e24785

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The Use of Digital Platforms for Adults’ and Adolescents’ Physical Activity During the COVID-19 Pandemic (Our Life at Home): Survey Study

Kate Parker, Riaz Uddin, Nicola D Ridgers, Helen Brown, Jenny Veitch, Jo Salmon, Anna Timperio, Shannon Sahlqvist, Samuel Cassar, Kim Toffoletti, Ralph Maddison, Lauren Arundell

J Med Internet Res 2021 (Feb 01); 23(2):e23389

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SARS-CoV-2 Wave Two Surveillance in East Asia and the Pacific: Longitudinal Trend Analysis

Lori Ann Post, Jasmine S Lin, Charles B Moss, Robert Leo Murphy, Michael G Ison, Chad J Achenbach, Danielle Resnick, Lauren Nadya Singh, Janine White, Michael J Boctor, Sarah B Welch, James Francis Oehmke

J Med Internet Res 2021 (Feb 01); 23(2):e25454

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Estimated Sleep Duration Before and During the COVID-19 Pandemic in Major Metropolitan Areas on Different Continents: Observational Study of Smartphone App Data

Rebecca Robbins, Mahmoud Affouf, Matthew D Weaver, Mark É Czeisler, Laura K Barger, Stuart F Quan, Charles A Czeisler

J Med Internet Res 2021 (Feb 02); 23(2):e20546

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Physical Activity Behavior Before, During, and After COVID-19 Restrictions: Longitudinal Smartphone-Tracking Study of Adults in the United Kingdom

Hannah McCarthy, Henry W W Potts, Abigail Fisher

J Med Internet Res 2021 (Feb 03); 23(2):e23701

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Predicting Public Uptake of Digital Contact Tracing During the COVID-19 Pandemic: Results From a Nationwide Survey in Singapore

Young Ern Saw, Edina Yi-Qin Tan, Jessica Shijia Liu, Jean CJ Liu

J Med Internet Res 2021 (Feb 03); 23(2):e24730

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Surveillance Metrics of SARS-CoV-2 Transmission in Central Asia: Longitudinal Trend Analysis

Lori Ann Post, Elana T Benishay, Charles B Moss, Robert Leo Murphy, Chad J Achenbach, Michael G Ison, Danielle Resnick, Lauren Nadya Singh, Janine White, Azraa S Chaudhury, Michael J Boctor, Sarah B Welch, James Francis Oehmke

J Med Internet Res 2021 (Feb 03); 23(2):e25799

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Using Twitter to Understand the COVID-19 Experiences of People With Dementia: Infodemiology Study

Juanita-Dawne Bacsu, Megan E O'Connell, Allison Cammer, Mahsa Azizi, Karl Grewal, Lisa Poole, Shoshana Green, Saskia Sivananthan, Raymond J Spiteri

J Med Internet Res 2021 (Feb 03); 23(2):e26254

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Factors Driving Citizen Engagement With Government TikTok Accounts During the COVID-19 Pandemic: Model Development and Analysis

Qiang Chen, Chen Min, Wei Zhang, Xiaoyue Ma, Richard Evans

J Med Internet Res 2021 (Feb 04); 23(2):e21463

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Hidden Variables in Deep Learning Digital Pathology and Their Potential to Cause Batch Effects: Prediction Model Study

Max Schmitt, Roman Christoph Maron, Achim Hekler, Albrecht Stenzinger, Axel Hauschild, Michael Weichenthal, Markus Tiemann, Dieter Krahl, Heinz Kutzner, Jochen Sven Utikal, Sebastian Haferkamp, Jakob Nikolas Kather, Frederick Klauschen, Eva Krieghoff-Henning, Stefan Fröhling, Christof von Kalle, Titus Josef Brinker

J Med Internet Res 2021 (Feb 02); 23(2):e23436

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The Promise and Peril of Mobile Phones for Youth in Rural Uganda: Multimethod Study of Implications for Health and HIV

Philip Kreniske, Alyssa Basmajian, Neema Nakyanjo, William Ddaaki, Dauda Isabirye, Charles Ssekyewa, Rosette Nakubulwa, Jennifer S. Hirsch, Andrea Deisher, Fred Nalugoda, Larry W Chang, John S Santelli

J Med Internet Res 2021 (Feb 02); 23(2):e17837

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Novel Analgesic Index for Postoperative Pain Assessment Based on a Photoplethysmographic Spectrogram and Convolutional Neural Network: Observational Study

Byung-Moon Choi, Ji Yeon Yim, Hangsik Shin, Gyujeong Noh

J Med Internet Res 2021 (Feb 03); 23(2):e23920

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Income-Generating Processes of Free Web-Based Digital Health Tools to Engage Patients: Qualitative Analysis

Claudia Lai, Raisa Deber, Alejandro R Jadad, Aviv Shachak

J Med Internet Res 2021 (Feb 03); 23(2):e23654

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Measurement of Digital Literacy Among Older Adults: Systematic Review

Sarah Soyeon Oh, Kyoung-A Kim, Minsu Kim, Jaeuk Oh, Sang Hui Chu, JiYeon Choi

J Med Internet Res 2021 (Feb 03); 23(2):e26145

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A Virtual Reality Exergame to Engage Adolescents in Physical Activity: Mixed Methods Study Describing the Formative Intervention Development Process

Nuša Farič, Lee Smith, Adrian Hon, Henry W W Potts, Katie Newby, Andrew Steptoe, Abi Fisher

J Med Internet Res 2021 (Feb 04); 23(2):e18161

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Identifying Self-Management Support Needs for Pregnant Women With Opioid Misuse in Online Health Communities: Mixed Methods Analysis of Web Posts

Ou Stella Liang, Yunan Chen, David S Bennett, Christopher C Yang

J Med Internet Res 2021 (Feb 04); 23(2):e18296

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Machine Learning–Based Early Warning Systems for Clinical Deterioration: Systematic Scoping Review

Sankavi Muralitharan, Walter Nelson, Shuang Di, Michael McGillion, PJ Devereaux, Neil Grant Barr, Jeremy Petch

J Med Internet Res 2021 (Feb 04); 23(2):e25187

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