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Prevalence of Traditional East Asian Medicine Patterns among Older Adults with Frailty: a systematic review of observational studies

Year: 2026
Type: review
Abstract: Frailty is a common geriatric syndrome that increases vulnerability to adverse health outcomes.Traditional East Asian medicine (TEAM) provides a distinct framework for understanding frailty through syndrome differentiation; however, the prevalence and distribution of TEAM patterns in frail populations remain unclear.This review aimed to systematically evaluate and meta-analyze the prevalence of TEAM patterns in frail older adults.A comprehensive search of five electronic databases was conducted through May 2025.Observational studies reporting TEAM patterns in adults aged ≥ 60 years with validated frailty diagnoses were included.Two independent reviewers screened studies, extracted data, and assessed methodological quality using the Newcastle-Ottawa Scale.Random-effects meta-analysis was used to pool prevalence estimates.Eleven observational studies involving 3,345 participants met the inclusion criteria.All studies were conducted in China; no eligible studies from Korea or Japan were identified.Methodological quality was generally low, and no study was rated as high quality.Deficiency-related TEAM patterns predominated.The most frequently reported patterns were qi-blood deficiency (exploratory pooled prevalence: 24.0%) and kidney essence deficiency (24.0%), followed by spleen deficiency with phlegm-dampness (23.0%).Liver-kidney yin deficiency had a pooled prevalence of 26.0%, based on two studies.Substantial heterogeneity was observed across studies (I 2 > 80%), and overall methodological limitations reduce the precision and generalizability of these findings.Syndrome differentiation was conducted by TEAM practitioners using the four diagnostic methods, consistently incorporating tongue and pulse examination; however, diagnostic criteria varied among studies.Age, comorbidities, and nutritional markers were associated with frailty.Exploratory analysis suggests frail older adults predominantly exhibit deficiency-related patterns, particularly qi-blood deficiency, kidney essence deficiency, and spleen deficiency with phlegm-dampness.However, the low methodological quality, substantial heterogeneity, and restriction to Chinese populations indicate that these findings should be considered preliminary and require confirmation through rigorously designed studies.
Language: English
Field: Medicine
Open Access status: diamond
OpenAlex ID: W7141544648
FWCI: 4.043
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Cited by: 1
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