Abstract

ObjectivesFrailty, a multidimensional syndrome characterized by vulnerability to stressors, is an emerging public health priority with high prevalence in older adults. Frailty has been identified to predictive negative health outcomes, yet quantified evidence regarding its effect on health care systems is scarce. This study examines how frailty affects health care utilization, and explores whether these associations varied by gender. DesignCohort study with a 2-year follow-up. Settingand Participants: Data were derived from 2 waves (2011 and 2013) of the China Health and Retirement Longitudinal Study, and 3119 community-dwelling participants aged ≥60 years were analyzed. MethodsFrailty was assessed by a validated frailty phenotype scale, and measures for health care utilization were self-reported. Panel data approach of mixed-effects regression models was used to examine the associations. ResultsLongitudinal results demonstrated that compared with robustness, prefrailty and frailty were both significantly associated with increased likelihood of outpatient visit, inpatient visit, and inpatient length of stay, even after adjusting for multimorbidity in multivariate analyses (all P < .05). Every 1-component increase in frailty was also found to significantly increase the risk for health care utilization [any outpatient visit: adjusted odds ratio (OR) 1.30, 95% confidence interval (CI) 1.14–1.48; number of outpatient visits: adjusted incident rate ratio (IRR) 1.34, 95% CI 1.18–1.53; any inpatient visit: adjusted OR 1.44, 95% CI 1.22–1.71; number of inpatient visits: adjusted IRR 1.40, 95% CI 1.20–1.62; inpatient length of stay: adjusted IRR 1.50, 95% CI 1.18–1.92]. The preceding associations were similarly observed irrespective of gender. Conclusions and ImplicationsFrailty is a significant predictor for increased health care utilization among community-dwelling older adults. These findings have important implications for routine clinical practice and public health investment. Early screening and intervention for potentially modifiable frailty could translate into considerable savings for households and health care systems.

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