ArticleBMC geriatrics2025
Impaired sensitivity to thyroid hormones is associated with frailty in older patients with cardiometabolic disease.
Article in BMC geriatrics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundIt is unclear how impaired peripheral and central sensitivity to thyroid hormones relates to frailty. In this cross-sectional study, we investigated whether these indices were associated with the prevalence of frailty in older patients with cardiometabolic disease.
methodsA total of 637 older patients with cardiometabolic disease who visited an outpatient clinic and were evaluated for thyroid function and frailty indices were included in this analysis. The free triiodothyronine/free thyroxine ratio (fT3/fT4) and Thyroid Feedback Quantile-based Index (TFQI) were measured as peripheral and central sensitivity to thyroid hormones, respectively. Using the Mann–Whitney U test and multivariate logistic regression analysis, we investigated the association between these indices and frailty as defined by the modified Cardiovascular Health Study (mCHS) criteria and the Kihon Checklist (KCL).
resultsThe fT3/fT4 was lower and the TFQI was higher in patients with mCHS-defined frailty than in those without frailty (p < .001 and p = .021, respectively). Patients with KCL-defined frailty had lower fT3/fT4 (p < .001) but not TFQI. The fT3/fT4 ratio correlated with age, cognitive function, depressive mood, nutritional status, and physical activity, whereas the TFQI was not. Using multivariate analysis, after adjustment for cognitive function, nutritional status, physical activity, and inflammatory markers, the fT3/fT4 and TFQI were independently associated with mCHS-defined frailty (odds ratio [OR] = 0.56 (per 0.1unit increase); 95% confidence interval [CI], 0.34–0.92 and OR = 2.68; 95%CI, 1.07–6.70, respectively). Using the receiver operating characteristic curve analysis, fT3/fT4 showed a modest, but relatively high area under the curve compared with TFQI, fT4, fT3, or thyroid-stimulating hormone, indicating a better discriminative ability.
conclusionIndices of impaired peripheral and central sensitivity to thyroid hormones were independently associated with phenotype frailty based on the cardiovascular health study.
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