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Artificial Intelligence-Driven Biological Age Prediction Model Using Comprehensive Health Checkup Data: Development and Validation Study

Artificial Intelligence-Driven Biological Age Prediction Model Using Comprehensive Health Checkup Data: Development and Validation Study

The enrollment process is shown in Figure S1 in Multimedia Appendix 1. The mean (SD) participant age was 44.22 (11.26) years for 6467 men and 21,950 women. The baseline characteristics according to the aging of the study participants are shown in Table S1 in Multimedia Appendix 2. There were 1005 participants who were more than 65 years old and 27,412 who were 65 years old or less. Figure S2 in Multimedia Appendix 1 shows the chronological age distribution for the respective genders.

Chang-Uk Jeong, Jacob S Leiby, Dokyoon Kim, Eun Kyung Choe

JMIR Aging 2025;8:e64473

A Risk Prediction Model (CMC-AKIX) for Postoperative Acute Kidney Injury Using Machine Learning: Algorithm Development and Validation

A Risk Prediction Model (CMC-AKIX) for Postoperative Acute Kidney Injury Using Machine Learning: Algorithm Development and Validation

Acute kidney injury (AKI) represents a critical challenge in postoperative care, significantly affecting patient outcomes and health care systems. It is a common complication that affects up to 5% to 7.5% of all hospitalized patients, with a markedly higher prevalence of 20% in intensive care units [1]. Among all AKI in hospitalized patients, 40% occur in postoperative patients [1].

Ji Won Min, Jae-Hong Min, Se-Hyun Chang, Byung Ha Chung, Eun Sil Koh, Young Soo Kim, Hyung Wook Kim, Tae Hyun Ban, Seok Joon Shin, In Young Choi, Hye Eun Yoon

J Med Internet Res 2025;27:e62853

Analysis of Metabolic and Quality-of-Life Factors in Patients With Cancer for a New Approach to Classifying Walking Habits: Secondary Analysis of a Randomized Controlled Trial

Analysis of Metabolic and Quality-of-Life Factors in Patients With Cancer for a New Approach to Classifying Walking Habits: Secondary Analysis of a Randomized Controlled Trial

At the same time, commercial smartphone apps have many limitations in research, especially in collecting physical activity data over a sufficient period [16]. Consequently, the practical application of the research results to patients with cancer in the real world is limited, although e Health tools can provide a potent resource to facilitate personalized and accessible care in daily life [11,12].

Yae Won Tak, Junetae Kim, Haekwon Chung, Sae Byul Lee, In Ja Park, Sei Won Lee, Min-Woo Jo, Jong Won Lee, Seunghee Baek, Yura Lee

J Med Internet Res 2025;27:e52694

Optimizing Initial Vancomycin Dosing in Hospitalized Patients Using Machine Learning Approach for Enhanced Therapeutic Outcomes: Algorithm Development and Validation Study

Optimizing Initial Vancomycin Dosing in Hospitalized Patients Using Machine Learning Approach for Enhanced Therapeutic Outcomes: Algorithm Development and Validation Study

The description of the web-based app use is summarized in Figure 2, and an example of the screenshot is provided in Figure S3 in Multimedia Appendix 1. Summary of web-based app use. The user can predict whether the area under the curve over 24 hours to minimum inhibitory concentration (AUC24/MIC) of the initial vancomycin dosage they plan to administer falls within the therapeutic range.

Heonyi Lee, Yi-Jun Kim, Jin-Hong Kim, Soo-Kyung Kim, Tae-Dong Jeong

J Med Internet Res 2025;27:e63983

Nationwide Trends in Screen Time and Associated Risk Factors by Family Structures Among Adolescents, 2008-2022: Nationwide Cross-Sectional Study

Nationwide Trends in Screen Time and Associated Risk Factors by Family Structures Among Adolescents, 2008-2022: Nationwide Cross-Sectional Study

Starting at 119.80 minutes per day (m/d; 95% CI 118.63-120.98) in 2008-2009, it temporarily decreased to 99.64 m/d (95% CI 98.45-100.83) in 2012-2013, then increased to 165.68 m/d (95% CI 163.27-168.08) in 2016-2017, and finally reached 306.80 m/d (95% CI 304.30-309.30) in 2020-2022, reflecting a sharp increase during the pandemic. Trends in weighted screen time among adolescents in South Korea by family type, 2008-2022.

Seokjun Kim, Hyesu Jo, Yejun Son, Min Kyung Shin, Kyeongmin Lee, Jaeyu Park, Hayeon Lee, Lee Smith, Elena Dragioti, Guillaume Fond, Laurent Boyer, Guillermo F López Sánchez, Mark A Tully, Masoud Rahmati, Damiano Pizzol, Selin Woo, Dong Keon Yon

JMIR Public Health Surveill 2025;11:e57962

Comparative Effectiveness of Wearable Devices and Built-In Step Counters in Reducing Metabolic Syndrome Risk in South Korea: Population-Based Cohort Study

Comparative Effectiveness of Wearable Devices and Built-In Step Counters in Reducing Metabolic Syndrome Risk in South Korea: Population-Based Cohort Study

The practice of “regular walking” was defined based on a survey as engaging in walking for at least 10 minutes consecutively for 5 or more days in the past week. If individuals who did not practice “regular walking” before participating in the program started practicing it afterward, it was considered an improvement in “regular walking.”

Kyung-In Joung, Sook Hee An, Joon Seok Bang, Kwang Joon Kim

JMIR Mhealth Uhealth 2025;13:e64527

A Novel Artificial Intelligence–Enhanced Digital Network for Prehospital Emergency Support: Community Intervention Study

A Novel Artificial Intelligence–Enhanced Digital Network for Prehospital Emergency Support: Community Intervention Study

The study was conducted in 2 geographically adjacent areas, each under the jurisdiction of different local fire departments: the northwest region of Seoul (region 1) and Goyang City in Gyeonggi-do (region 2). The demographic characteristics and the composition of the EMS in these 2 regions are detailed in Table 1. A total of 5 fire stations and 9 EDs participated in this study.

Ji Hoon Kim, Min Joung Kim, Hyeon Chang Kim, Ha Yan Kim, Ji Min Sung, Hyuk-Jae Chang

J Med Internet Res 2025;27:e58177

Satisfactory Evaluation of Call Service Using AI After Ureteral Stent Insertion: Randomized Controlled Trial

Satisfactory Evaluation of Call Service Using AI After Ureteral Stent Insertion: Randomized Controlled Trial

Among 14 patients in group 1, a total of 10 were male and 4 were female, while 8 were male and 6 were female in group 2. In group 1, the upper ureter stone was the most common (5/14, 36%), and in group 2, the distal ureter stone was the most common location of urinary stone (7/14, 50%). Mean stone size was 5.12 mm in group 1 and 6.26 mm in group 2, but grade-1 hydronephrosis was the most common in both groups (11/14, 79% and 12/14, 86%, respectively).

Ukrae Cho, Yong Nam Gwon, Seung Ryong Chong, Ji Yeon Han, Do Kyung Kim, Seung Whan Doo, Won Jae Yang, Kyeongmin Kim, Sung Ryul Shim, Jaehun Jung, Jae Heon Kim

J Med Internet Res 2025;27:e56039

Therapeutic Potential of Social Chatbots in Alleviating Loneliness and Social Anxiety: Quasi-Experimental Mixed Methods Study

Therapeutic Potential of Social Chatbots in Alleviating Loneliness and Social Anxiety: Quasi-Experimental Mixed Methods Study

In the field of psychiatry, chatbots have provided useful information in response to user questions [2] and have shown tangible therapeutic effects through psychological therapies, such as cognitive behavioral therapy [3,4]. Various studies have highlighted the potential of chatbots as an effective medium for digital self-help.

Myungsung Kim, Seonmi Lee, Sieun Kim, Jeong-in Heo, Sangil Lee, Yu-Bin Shin, Chul-Hyun Cho, Dooyoung Jung

J Med Internet Res 2025;27:e65589

Development and Validation of the Digital Sensitivity Scale for Adults: Cross-Sectional Observational Study

Development and Validation of the Digital Sensitivity Scale for Adults: Cross-Sectional Observational Study

A statistically significant difference was found in the total digital literacy score (F5=18.076; P The analysis of differences across subfactors by age group is as follows. In the digital application subfactor, individuals in their 20s scored higher than those in their 40s, 50s, and 60s. Individuals in their 30s also scored significantly higher than those in their 50s and 60s, whereas those in their 40s scored higher than those in their 60s.

Hae In Park, Minjeong Jeon, Ji Seon Ahn, Kyungmi Chung, Jin Young Park

J Med Internet Res 2025;27:e55828