General Original Articles (Editor: G. Eysenbach)*

Evolving Epidemiological Characteristics of COVID-19 in Hong Kong From January to August 2020: Retrospective Study

Kin On Kwok, Wan In Wei, Ying Huang, Kai Man Kam, Emily Ying Yang Chan, Steven Riley, Ho Hin Henry Chan, David Shu Cheong Hui, Samuel Yeung Shan Wong, Eng Kiong Yeoh

J Med Internet Res 2021 (Apr 16); 23(4):e26645

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Prediction Models for the Clinical Severity of Patients With COVID-19 in Korea: Retrospective Multicenter Cohort Study

Bumjo Oh, Suhyun Hwangbo, Taeyeong Jung, Kyungha Min, Chanhee Lee, Catherine Apio, Hyejin Lee, Seungyeoun Lee, Min Kyong Moon, Shin-Woo Kim, Taesung Park

J Med Internet Res 2021 (Apr 16); 23(4):e25852

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Multimodal Recruitment to Study Ovulation and Menstruation Health: Internet-Based Survey Pilot Study

Shruthi Mahalingaiah, J Jojo Cheng, Michael R Winter, Erika Rodriguez, Victoria Fruh, Anna Williams, MyMy Nguyen, Rashmi Madhavan, Pascaline Karanja, Jill MacRae, Sai Charan Konanki, Kevin J Lane, Ann Aschengrau

J Med Internet Res 2021 (Apr 16); 23(4):e24716

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Establishing Machine Learning Models to Predict Curative Resection in Early Gastric Cancer with Undifferentiated Histology: Development and Usability Study

Chang Seok Bang, Ji Yong Ahn, Jie-Hyun Kim, Young-Il Kim, Il Ju Choi, Woon Geon Shin

J Med Internet Res 2021 (Apr 15); 23(4):e25053

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Use of Endoscopic Images in the Prediction of Submucosal Invasion of Gastric Neoplasms: Automated Deep Learning Model Development and Usability Study

Chang Seok Bang, Hyun Lim, Hae Min Jeong, Sung Hyeon Hwang

J Med Internet Res 2021 (Apr 15); 23(4):e25167

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Combining Web-Based Gamification and Physical Nudges With an App (MoveMore) to Promote Walking Breaks and Reduce Sedentary Behavior of Office Workers: Field Study

André Mamede, Gera Noordzij, Joran Jongerling, Merlijn Snijders, Astrid Schop-Etman, Semiha Denktas

J Med Internet Res 2021 (Apr 12); 23(4):e19875

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Characterizing the Anticancer Treatment Trajectory and Pattern in Patients Receiving Chemotherapy for Cancer Using Harmonized Observational Databases: Retrospective Study

Hokyun Jeon, Seng Chan You, Seok Yun Kang, Seung In Seo, Jeremy L Warner, Rimma Belenkaya, Rae Woong Park

JMIR Med Inform 2021 (Apr 06); 9(4):e25035

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Rural Telemedicine Use Before and During the COVID-19 Pandemic: Repeated Cross-sectional Study

Cherry Chu, Peter Cram, Andrea Pang, Vess Stamenova, Mina Tadrous, R Sacha Bhatia

J Med Internet Res 2021 (Apr 05); 23(4):e26960

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Development and Evaluation of a Mobile App Designed to Increase HIV Testing and Pre-exposure Prophylaxis Use Among Young Men Who Have Sex With Men in the United States: Open Pilot Trial

Katie B Biello, Jonathan Hill-Rorie, Pablo K Valente, Donna Futterman, Patrick S Sullivan, Lisa Hightow-Weidman, Kathryn Muessig, Julian Dormitzer, Matthew J Mimiaga, Kenneth H Mayer

J Med Internet Res 2021 (Mar 24); 23(3):e25107

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Development of a Smartphone App to Predict and Improve the Rates of Suicidal Ideation Among Transgender Persons (TransLife): Qualitative Study

Alex Dubov, Liana Fraenkel, Zil Goldstein, Hansel Arroyo, Derek McKellar, Steve Shoptaw

J Med Internet Res 2021 (Mar 24); 23(3):e24023

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Share to Seek: The Effects of Disease Complexity on Health Information–Seeking Behavior

Ashwag Alasmari, Lina Zhou

J Med Internet Res 2021 (Mar 24); 23(3):e21642

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Satisfaction and Acceptability of Telemonitored Home-Based Exercise in Patients With Intermittent Claudication: Pragmatic Observational Pilot Study

Nils Cornelis, Roselien Buys, Tijl Dewit, Dries Benoit, Jomme Claes, Inge Fourneau, Véronique Cornelissen

JMIR Rehabil Assist Technol 2021 (Mar 22); 8(1):e18739

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Predicting Outcomes in Patients Undergoing Pancreatectomy Using Wearable Technology and Machine Learning: Prospective Cohort Study

Heidy Cos, Dingwen Li, Gregory Williams, Jeffrey Chininis, Ruixuan Dai, Jingwen Zhang, Rohit Srivastava, Lacey Raper, Dominic Sanford, William Hawkins, Chenyang Lu, Chet W Hammill

J Med Internet Res 2021 (Mar 18); 23(3):e23595

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Social Media Engagement and Influenza Vaccination During the COVID-19 Pandemic: Cross-sectional Survey Study

Arriel Benis, Anna Khodos, Sivan Ran, Eugene Levner, Shai Ashkenazi

J Med Internet Res 2021 (Mar 16); 23(3):e25977

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Implementation of the Operating Room Black Box Research Program at the Ottawa Hospital Through Patient, Clinical, and Organizational Engagement: Case Study

Sylvain Boet, Nicole Etherington, Sandy Lam, Maxime Lê, Laurie Proulx, Meghan Britton, Julie Kenna, Antoine Przybylak-Brouillard, Jeremy Grimshaw, Teodor Grantcharov, Sukhbir Singh

J Med Internet Res 2021 (Mar 16); 23(3):e15443

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Parents’ Perspectives on Using Artificial Intelligence to Reduce Technology Interference During Early Childhood: Cross-sectional Online Survey

Jill Glassman, Kathryn Humphreys, Serena Yeung, Michelle Smith, Adam Jauregui, Arnold Milstein, Lee Sanders

J Med Internet Res 2021 (Mar 15); 23(3):e19461

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A Screening Method Using Anomaly Detection on a Smartphone for Patients With Carpal Tunnel Syndrome: Diagnostic Case-Control Study

Takafumi Koyama, Shusuke Sato, Madoka Toriumi, Takuro Watanabe, Akimoto Nimura, Atsushi Okawa, Yuta Sugiura, Koji Fujita

JMIR Mhealth Uhealth 2021 (Mar 14); 9(3):e26320

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Commencement of and Retention in Web-Based Interventions and Response to Prompts and Reminders: Longitudinal Observational Study Based on Two Randomized Controlled Trials

Athanasios Andriopoulos, Erik M G Olsson, Ylva Hägg Sylvén, Jonas Sjöström, Birgitta Johansson, Louise von Essen, Helena Grönqvist

J Med Internet Res 2021 (Mar 12); 23(3):e24590

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Adherence Patterns and Dose Response of Physiotherapy for Rotator Cuff Pathology: Longitudinal Cohort Study

David Burns, Philip Boyer, Helen Razmjou, Robin Richards, Cari Whyne

JMIR Rehabil Assist Technol 2021 (Mar 11); 8(1):e21374

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User Engagement and Clinical Impact of the Manage My Pain App in Patients With Chronic Pain: A Real-World, Multi-site Trial

Anuj Bhatia, Jamal Kara, Tahir Janmohamed, Atul Prabhu, Gerald Lebovic, Joel Katz, Hance Clarke

JMIR Mhealth Uhealth 2021 (Mar 04); 9(3):e26528

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