Intrinsic capacity and hospitalization among older adults: a nationally representative cross-sectional study

We aimed to investigate the association of the intrinsic capacity (IC) composite measure and the vitality, locomotor, cognitive, sensory, and psychological IC domains with hospitalization in the previous year and length of hospital stay. Participants with high IC composite scores were less likely to have experienced hospitalizations in the previous year and long hospital stays. The vitality domain was a critical marker for both hospitalization and length of hospital stay. Cognitive and psychological domains were associated with hospitalization, and the locomotor domain was related to length of stay. IC is a valuable tool for monitoring the health of community-dwelling older adults. This approach introduces the opportunity for preventive measures and is promising in promoting integrated care for older people. Monitoring intrinsic capacity (IC) in community-dwelling older people can be potentially used to alert for adverse health outcomes. However, whether there is an association between IC and hospitalization has yet to be fully explored. This study aimed to investigate the association of the IC composite measure and its 5 domains with hospitalization in the previous year and length of hospital stay. We conducted cross-sectional analyses using data from a representative sample of community-dwelling adults (≥ 65 years). We assessed the IC domains (vitality, locomotor, cognitive, sensory, and psychological) using validated self-reported information and performance tests. We calculated standardized estimated scores (z scores) for IC composite measure and domains and conducted multivariate logistic and ordinal regressions. The primary outcomes were hospitalizations in the previous year and length of hospital stay. In a sample of 5354 participants (mean age = 73 ± 6 years), we found that participants with high IC composite z scores were less likely to have experienced hospitalization in the previous year (OR = 0.51; 95