Rong Huang,Longdi Xian,Christopher Chi Wai Cheng,Jie Chen,Kit Ying Chan,Calvin Lam,Joey W. Y. Chan,Steven W. H. Chau,Ngan Yin Chan,Bei Huang,Yun Kwok Wing,Tim M. H. Li
{"title":"Exploring generalizability and explainability of LLMs in classifying clinically rated suicidal ideation using heterogeneous data","authors":"Rong Huang,Longdi Xian,Christopher Chi Wai Cheng,Jie Chen,Kit Ying Chan,Calvin Lam,Joey W. Y. Chan,Steven W. H. Chau,Ngan Yin Chan,Bei Huang,Yun Kwok Wing,Tim M. H. Li","doi":"10.1038/s41746-026-03198-w","DOIUrl":"https://doi.org/10.1038/s41746-026-03198-w","url":null,"abstract":"Abstract While artificial intelligence (AI) and large language models (LLMs) have shown promise in identifying and classifying suicidal ideation, their generalizability and equity in the presence of heterogeneous clinical data remain largely unexplored. This study hypothesized a subgroup disparity in a crude AI classifier of clinician-rated suicidal ideation because of the linguistic heterogeneity and proposed a factorization approach to decompose complex data into simpler components by reducing topic dimensions of clinical transcripts. Results showed that topic-specific classifiers reduced subgroup disparity compared to the topic-general classifier, with ΔAUC decreasing from 0.11 to 0.01 and 0.05—a noticeable reduction of 0.10 and 0.06, respectively. More specifically, with the topic-general classifier, the odds of missing a suicidal case increased by 2.39 times for alexithymia individuals, compared to non-alexithymia individuals (OR = 2.39, p = 0.002). These findings underscore the significance of data heterogeneity on AI classifiers of suicidal ideation and demonstrate the potential of the proposed factorization approach.","PeriodicalId":19349,"journal":{"name":"NPJ Digital Medicine","volume":"71 1","pages":""},"PeriodicalIF":15.2,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148893701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kirsten I. Taylor,Arnaud M. Wolfer,Irma T. Kurniawan,Miguel Veloso,Goullou Keita,Niels Hagenbuch,Beijue Shi,Foteini Orfaniotou,Eduardo A. Aponte,Macarena Garcia Valdecasas Colell,Christopher H. Chatham,Štefan Holiga,Raphael Ullmann,Wael Abouelkheir,Simone Rey-Riek,Emma Poon,David Watson,Mercè Boada,Thanneer M. Perumal
{"title":"From feasibility to neuroanatomic validity of remote cognitive smartphone assessments in early Alzheimer’s disease","authors":"Kirsten I. Taylor,Arnaud M. Wolfer,Irma T. Kurniawan,Miguel Veloso,Goullou Keita,Niels Hagenbuch,Beijue Shi,Foteini Orfaniotou,Eduardo A. Aponte,Macarena Garcia Valdecasas Colell,Christopher H. Chatham,Štefan Holiga,Raphael Ullmann,Wael Abouelkheir,Simone Rey-Riek,Emma Poon,David Watson,Mercè Boada,Thanneer M. Perumal","doi":"10.1038/s41746-026-03108-0","DOIUrl":"https://doi.org/10.1038/s41746-026-03108-0","url":null,"abstract":"","PeriodicalId":19349,"journal":{"name":"NPJ Digital Medicine","volume":"9 1","pages":""},"PeriodicalIF":15.2,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148893703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marya Getchell,Michael Barber,Thomas Carpino,Carl J. E. Suster,Vitali Sintchenko,Nan Liu,Suci Wulandari,Yoong Khean Khoo,Ashley Tsai,Junxiong Pang,David B. Hipgrave,Shurendar Kumar,Ahmad Watsiq Maula,Philip AbdelMalik,Timothy J. Dallman,Paul M. Pronyk
{"title":"Platforms for artificial intelligence-enabled infectious disease surveillance","authors":"Marya Getchell,Michael Barber,Thomas Carpino,Carl J. E. Suster,Vitali Sintchenko,Nan Liu,Suci Wulandari,Yoong Khean Khoo,Ashley Tsai,Junxiong Pang,David B. Hipgrave,Shurendar Kumar,Ahmad Watsiq Maula,Philip AbdelMalik,Timothy J. Dallman,Paul M. Pronyk","doi":"10.1038/s41746-026-03189-x","DOIUrl":"https://doi.org/10.1038/s41746-026-03189-x","url":null,"abstract":"Abstract Artificial intelligence (AI)-enabled infectious disease surveillance platforms are expanding rapidly, but their roles within health systems remain poorly characterized. This review examined 20 platforms according to primary data inputs, surveillance function, AI methods, data privacy, geographic scope and pathogen focus. Three archetypes emerged: Early Warning Networks, Situational Awareness Platforms and Integrated Surveillance Platforms. Their comparative analysis highlighted how data type, integration and localization shape platform contributions to public-health decision making.","PeriodicalId":19349,"journal":{"name":"NPJ Digital Medicine","volume":"27 1","pages":""},"PeriodicalIF":15.2,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148893704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A voice-biomarker foundation model for ALS monitoring and Parkinson’s screening","authors":"Arturo Loaiza-Bonilla,Pranav Arora,Nathan Hayman,Andres Deik","doi":"10.1038/s41746-026-03206-z","DOIUrl":"https://doi.org/10.1038/s41746-026-03206-z","url":null,"abstract":"","PeriodicalId":19349,"journal":{"name":"NPJ Digital Medicine","volume":"47 1","pages":""},"PeriodicalIF":15.2,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148893705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The illusion of clinical reasoning: a benchmark reveals the pervasive gap in vision-language models for clinical competency","authors":"Dingyu Wang,Zimu Yuan,Jiajun Liu,Shanggui Liu,Nan Zhou,Tianxing Xu,Di Huang,Dong Jiang","doi":"10.1038/s41746-026-03191-3","DOIUrl":"https://doi.org/10.1038/s41746-026-03191-3","url":null,"abstract":"","PeriodicalId":19349,"journal":{"name":"NPJ Digital Medicine","volume":"27 1","pages":""},"PeriodicalIF":15.2,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148893708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A five-phase evaluation framework for diagnostic and predictive medical artificial intelligence.","authors":"Zichen Ye, Yue Chen, Xuefeng Huang, Manman Chen, Wanzhou Wang, He Zhu, Keyu Han, Jiahui Wang, Qu Lu, Yuankai Zhao, Yimin Qu, Guanghan Gao, Yu Jiang","doi":"10.1038/s41746-026-03155-7","DOIUrl":"https://doi.org/10.1038/s41746-026-03155-7","url":null,"abstract":"<p><p>Artificial intelligence (AI) has advanced rapidly across diagnostic, prognostic, and clinical decision-support applications, yet the pathway from laboratory performance to demonstrable clinical benefit remains fragmented and inconsistently defined. Existing evaluations rely heavily on retrospective testing and algorithm-centric metrics, while current guidelines emphasize reporting standards rather than specifying validation across stages of model maturity. This study proposes a five-phase evaluation framework for medical AI, supported by a dynamic evaluation architecture reflecting the nonlinear, iterative nature of AI systems. The framework integrates technical validation, operational robustness validation, controlled interaction validation, clinical evidence validation, and real-world integration validation, while incorporating phase-gating criteria and local and systemic fall-back triggers. These mechanisms enable re-entry into earlier phases based on drift, version updates, or safety signals, and accommodate parallel activities such as implementation research informing clinical trials. By systematically mapping multicenter external validation, shadow-mode testing, human-AI comparison and cooperation studies, randomized controlled trials, real-world evaluations, and adaptive designs into a coherent lifecycle pathway, the framework addresses persistent gaps between laboratory performance and clinical benefit. It provides researchers, clinical institutions, and regulators with an operational, scalable approach aligned with evolving regulatory expectations, supporting trustworthy, ethically aligned, and lifecycle-based evidence generation for medical AI systems.</p>","PeriodicalId":19349,"journal":{"name":"NPJ Digital Medicine","volume":"9 1","pages":""},"PeriodicalIF":18.0,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148891789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Differences in tone of AI and care team responses to patient messages by patient demographics","authors":"Angela Mastrianni,William R. Small,Yuhan Betty Cui,Amelia Shunk,Soumik Mandal,Simon Jones,Nicole Redfern,Adam Szerencsy,Yindalon Aphinyanaphongs,Safiya Richardson","doi":"10.1038/s41746-026-03185-1","DOIUrl":"https://doi.org/10.1038/s41746-026-03185-1","url":null,"abstract":"","PeriodicalId":19349,"journal":{"name":"NPJ Digital Medicine","volume":"40 1","pages":""},"PeriodicalIF":15.2,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148893707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}