Frailty prevalence was estimated across ten waves of the English Longitudinal Study of Ageing, 2002 to 2022. Among 6,226 to 11,218 community-dwelling adults aged 50 and over per wave, frailty rose non-significantly from 15.5% to 17.8%. Rising socio-demographic development and education offset 222.5% and 94.9% of the 2.3-point rise respectively. A calendar-year term, standing for unmeasured influences such as the pandemic, added 440.6%. Under assumed trends in age, smoking and other factors, projected 2040 prevalence was 20.5% (95% CI 19.2% to 21.9%). Care home residents were excluded, and the unexplained year term leaves the main drivers of the rise unknown.
Why it is interesting: Prevalence barely moved over 20 years, yet the number of frail people grew from 2,560,122 to 3,791,038. Gains in education and socio-demographic development offset the rise, but its main drivers stayed unmeasured.
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