Disease or function? What matters most for self-rated health in older people depends on age

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Disease or function? What matters most for self‑rated health in older people depends on age Viviane S. Straatmann1 · Davide L. Vetrano1,2,3 · Laura Fratiglioni1,4 · Amaia Calderón‑Larrañaga1  Received: 2 December 2019 / Accepted: 8 February 2020 © The Author(s) 2020

Abstract Background  Self-rated health (SRH) holistically captures older adults’ health status from the perspective of the individual. Aims  To explore the accuracy of five objective health indicators related to diseases, physical function, cognition and disability in discriminating SRH among the youngest and oldest old. Methods  We used baseline data from 2196 participants of the Swedish National Study on Aging and Care in Kungsholmen (SNAC-K), Sweden (years 2001–2004). Area under the receiver operating characteristic curves (AUROC) were obtained from logistic regressions adjusted by sex, age and education. Results  Among the youngest old, having ≥ 4 chronic diseases showed the highest discriminatory capacity of poor versus good SRH (AUROC: 0.714). Among the oldest old, a walking speed