Longitudinal and Cohort Studies in Public Health

Migration Effects on Cognition: Protocol for the Aging in Kerala Americans Research Study

Kelly Cotton, Dristi Adhikari, Anne Felicia Ambrose, Emmeline Ayers, Helena M Blumen, Mirnova E Ceïde, VG Pradeep Kumar, Mairim Melecio-Vazquez, Sanish Sathyan, Alben Sigamani, Kavita Sivaramakrishnan, Marnina Stimmel, Erica F Weiss, Jie Yang, Joe Verghese

JMIR Res Protoc 2026 (Feb 13); 15:e85493

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Early-Life Exposures, Neurodevelopment, and Health Outcomes: Protocol for a Birth Cohort Study

Tor A Strand, Maria Averina, Kjersti Sletten Bakken, Sudha Basnet, Yvonne Böttcher, Sandra Huber, Mari Hysing, Ingrid Kvestad, Torben Lüders, Adrian McCann, Dhiraj Pokhrel, Suman Ranjitkar, Arun K Sharma, Merina Shrestha, Manjeswori Ulak, Ram K Chandyo

JMIR Res Protoc 2026 (Feb 11); 15:e78593

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Postpandemic Change in Demographic and Clinical Features of Patients With Omicron Who Were Hospitalized: Territory-Wide Retrospective Repeated Cross-Sectional Study in Hong Kong

Christie J Y Ching, Sunny C L Chan, Teddy T L Lee, Hugo H H Pui, Bosco K H Leung, Man Sing Wong, Tafu Yamamoto, Chak Kwan Tong, Cantian Wang, Timothy H Rainer, Abraham K C Wai

JMIR Public Health Surveill 2026 (Feb 09); 12:e75635

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Establish a PrEP (Pre-Exposure Prophylaxis) Epidemiology, Modeling, and Surveillance (PREMISE) System to Analyze Trends in PrEP Uptake and the Impact of PrEP Programs and Policies: Protocol for a Natural Experiment and Modeling Study in the United States

Aaron J Siegler, Shi Hao Ernest Koh, Wenting Huang, Eric Hall, Jeb Jones, Courtney R Yarbrough, Xiao Zang, Bohdan Nosyk, Edwin E Corbin-Gutierrez, Patrick S Sullivan

JMIR Res Protoc 2026 (Jan 30); 15:e80911

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An Integrated Multilevel Mental Health Support System for University Students: 4-Year Longitudinal Observational Study

Szilvia Vincze, Antal Bugán, Karolina Kósa, Zoltán Bács

JMIR Form Res 2026 (Jan 26); 10:e67089

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Exploring Perceived Changes to Mental Health When Restricting and Resuming Specific Adaptive Daily Actions: Longitudinal Qualitative Substudy Within a Randomized Controlled Trial

Alana Fisher, Blake F Dear, Alison Dagnall, Heather D Hadjistavropoulos, Olav Nielssen, Lauren G Staples, Rony Kayrouz, Nickolai Titov

JMIR Form Res 2026 (Jan 13); 10:e82986

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Examining the Association Between Internet Use and Perceived Stress in Adults: Longitudinal Observational Study Combining Web Tracking Data With Questionnaires

Mohammad Belal, Nguyen Luong, Talayeh Aledavood, Juhi Kulshrestha

J Med Internet Res 2026 (Jan 09); 28:e78775

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Developmental Trajectories of Positive Expectancies of Cannabis Use Effects Among Early Adolescents: Longitudinal Observational Study Using Latent Class Growth Analysis

Weisiyu Abraham Qin, Dong-Chul Seo, Wura Jacobs, Sijia Huang, Kit K Elam

JMIR Public Health Surveill 2026 (Jan 09); 12:e85652

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Association Between Parental Smoking Status and Adolescent Mental Health: Population-Based Study

Soo Jin Kwon, Hyejin Kim, Ji-Su Kim, Bo Han Kim

Asian Pac Isl Nurs J 2026 (Jan 05); 10:e73588

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Women’s Occupational Tobacco Dust Exposure in Indonesia (T-CHARM): Protocol for a Prospective Cohort Study

Ancah Caesarina Novi Marchianti, Athira Nandakumar, Elvia Rahmi Marga Putri, Dwita Aryadina Rachmawati, Sugiyanta Sugiyanta, Hairrudin Hairrudin, Elly Nurus Sakinah, Jauhar Firdaus, Muflihatul Muniroh, Eka Djatnika Nugraha

JMIR Res Protoc 2025 (Dec 31); 14:e84231

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Characterization of Post-Viral Infection Behaviors Among Patients With Long COVID: Prospective, Observational, Longitudinal Cohort Analyses of Fitbit Data and Patient-Reported Outcomes

Tianmai M Zhang, Sydney P Sharp, John D Scott, Douglas Taren, Jane C Samaniego, Elizabeth R Unger, Jeanne Bertolli, Jin-Mann S Lin, Christian B Ramers, Job G Godino

JMIR Form Res 2025 (Dec 31); 9:e77644

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Intimate Partner Violence and HIV Prevention Among Transgender and Nonbinary Persons: Protocol for a Prospective Mixed Methods Cohort Study

Erik D Storholm, Keith J Horvath, Adedotun Ogunbajo, Ayden Scheim, Arjee Restar, Ruby Lucas, Sarita D Lee, Sungsub Choo, Benji Jensen, Jessica Randazzo, Joshua Wolf, Cleo Spencer, Audren Bambilla, Glenn J Wagner

JMIR Res Protoc 2025 (Dec 30); 14:e82090

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Gut Microbiota, Antipsychotics, and Metabolic Alterations in Children and Adolescents: Protocol for a Longitudinal Observational Study

Marcela França Dias, Ana Paula de Alcântara Freitas, Suzana Figueiredo Collares, Renata Maria Silva Santos, Yago Jean de Almeida Nogueira, Antônio Márcio de Ávila Júnior, Tamires Coelho Martins, Paulo Marcos Brasil Rocha, Marco Aurélio Romano-Silva, Débora Marques de Miranda

JMIR Res Protoc 2025 (Dec 29); 14:e77374

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The Dynamic Associations of Social and Intellectual Activity With Frailty Trajectory in Middle-Aged and Older Adults in China: Nationwide Longitudinal Study

Fei Xu, Xinlei Miao, Shuang Liu, Yangxuan He, Meng Li, Jiayi Deng, Yilin Zhu, Jingshan Jiang, Song Leng

JMIR Aging 2025 (Dec 15); 8:e80152

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Digital Isolation and Depression Risk in Older Adults Using the National Health and Aging Trends Study Database: 8-Year Longitudinal Study

Zhili He, Shijun Yang, Wei Tong, Wei Zhang

JMIR Aging 2025 (Dec 12); 8:e75174

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Real-World Efficacy and Safety of Zishenyizhi Pill for Cognitive Impairment Associated With Cerebral Small Vessel Disease: Protocol for a Multicenter Prospective Observational Study

Xiongxing Sun, Yao Xie, Rui Fang, Shanshan Zeng, Shigao Lin, Xukun Tang, Jie Tang, Tenghui Hu, Yuhui Zhang, Le Xie, Dahua Wu

JMIR Res Protoc 2025 (Dec 08); 14:e77661

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Four-Year Effects of a Computer-Based Brief Alcohol Intervention Targeting Alcohol Users in the General Population: Randomized Controlled Trial

Andreas Staudt, Ulrich John, Jennis Freyer-Adam, Gallus Bischof, Maria Zeiser, Sophie Baumann

J Med Internet Res 2025 (Dec 02); 27:e77921

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Enrichment of the Canadian Partnership for Tomorrow’s Health Study: Protocol for Administering Multiple Online Dietary and Movement Behavior Assessment Tools in a Longitudinal Cohort Study

Rachel A Murphy, Jennifer E Vena, Alyssa D Milano, Guy Faulkner, Benoît Lamarche, Charles E Matthews, Leia M Minaker, Dylan Spicker, Ellen Sweeney, Michael Wallace, Michael J Widener, Sharon I Kirkpatrick

JMIR Res Protoc 2025 (Dec 02); 14:e71680

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A Community-Engaged Approach for Assessment of Cortisol Dynamic Range and Multilevel Chronic Stress in African Americans: FAITH! Heart Health+ Ancillary Study

Robin Ortiz, Joshua Joseph, Matthew P Johnson, Lainey Moen, Mathias Lalika, Clarence Jones, Irina Bancos, Lisa A Cooper, Sharonne N Hayes, Christi A Patten, LaPrincess C Brewer

J Particip Med 2025 (Dec 01); 17:e69604

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Long-Term Ambient Air Pollution Exposure and the Risk of Cardiovascular and Cerebrovascular Diseases in Rural Chinese Populations: 10-Year Follow-Up of a Multicenter Prospective Cohort Study

Yaqi Zhao, Xuefang Cao, Jiang Du, Aiwei He, Jun Liang, Weitao Duan, Yuanzhi Di, Yijun He, Boxuan Feng, Linyu Shen, Juanjuan Huang, Zihan Li, Jianguo Liang, Hongzhi Li, Zisen Liu, Fang Liu, Shumin Yang, Zuhui Xu, Bin Zhang, Jiaoxia Yan, Yanchun Liang, Rong Liu, Fei Shen, Qi Jin, Henan Xin, Lei Gao

JMIR Public Health Surveill 2025 (Nov 28); 11:e81218

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