Screening for deficits on intrinsic capacity domains and associated healthcare costs

Abstract

Background/objective: Intrinsic capacity (IC) defined by the World Health Organization is divided into six domains (locomotion, psychological, vitality/nutrition, cognition, vision and hearing). The main objective of this study therefore is to explore the association between healthcare costs and IC domains deficits among older patients.

Participants and setting: This longitudinal secondary analysis was performed on data from the Multidomain Alzheimer Preventive Trial (MAPT), a 3-year randomized controlled trial with non-demented community-dwelling participants aged 70 years or over.

Methods: We used an adapted version of the ICOPE (Integrated Care for Older People) Step 1 to screen for the six operational IC domains deficits at three time-points: baseline, one year and two years. We performed bivariate and multivariate analyzes using generalized linear models and generalized estimating equation models to identify associations between healthcare cost and deficits on IC domains.

Results: We analyzed 693 patients (aged 75.2 ± 4.22 years; 64% women (N = 442)). At baseline, among the included patients, 89% had at least one impairment in IC domains (N = 619). A deficit on visual capacity was associated with increased immediate healthcare costs (CR: 1.48; 95CI: [1.16-1.89]). Regarding persistent impairment of IC, locomotor (CR: 1.27; 95CI: [1.01-1.60], additional annual healthcare cost: €1092 per patient) and psychological (CR: 1.28; 95CI: [1.03-1.59], additional annual healthcare cost: €817 per patient) capacities were associated with increased healthcare costs.

Conclusion: In conclusion, this study showed that some deficits on IC domains, as measured by simple screening tests and questions, can be associated with higher healthcare costs.

Clinicaltrials: gov identifier: NCT00672685.

Keywords: Functional performance; Healthcare cost; Integrated care of older people; Intrinsic capacity; Screening.