Longitudinal bidirectional associations among sarcopenia risk, social isolation, and frailty in Chinese older adults using an item response theory-derived frailty index.

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Title: Longitudinal bidirectional associations among sarcopenia risk, social isolation, and frailty in Chinese older adults using an item response theory-derived frailty index.
Authors: Lin HQ; Zhongshan Hospital, Fudan University (Xiamen Branch), Xiamen, Fujian, China.; State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Xiamen, Fujian, China., Lin C; State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Xiamen, Fujian, China., Lin YF; State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Xiamen, Fujian, China., Wang XD; State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Xiamen, Fujian, China., Lin HB; State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Xiamen, Fujian, China., Chen XY; State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Xiamen, Fujian, China., Huang WX; State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Xiamen, Fujian, China., Zhong JL; Zhongshan Hospital, Fudan University (Xiamen Branch), Xiamen, Fujian, China., Fan H; Zhongshan Hospital, Fudan University (Xiamen Branch), Xiamen, Fujian, China., Hong YJ; Zhongshan Hospital, Fudan University (Xiamen Branch), Xiamen, Fujian, China.
Source: Frontiers in public health [Front Public Health] 2026 Jul 08; Vol. 14, pp. 1864444. Date of Electronic Publication: 2026 Jul 08 (Print Publication: 2026).
Publication Type: Journal Article; Observational Study
Journal Info: Publisher: Frontiers Editorial Office Country of Publication: Switzerland NLM ID: 101616579 Publication Model: eCollection Cited Medium: Internet ISSN: 2296-2565 (Electronic) Linking ISSN: 22962565 NLM ISO Abbreviation: Front Public Health Subsets: MEDLINE
Database: MEDLINE Ultimate
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ISSN:2296-2565
DOI:10.3389/fpubh.2026.1864444