| Title | Convergent validity of the interRAI-HC for societal costs estimates in comparison with the RUD Lite instrument in community dwelling older adults |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | van Lier LI, van der Roest HG, van Hout HPJ, van Eenoo L, Declercq A, Garms-Homolova V, Onder G, Finne-Soveri H, Jónsson PV, Hertogh CMPM, Bosmans JE |
| Journal | BMC Health Services Research |
| Volume | 16 |
| Issue | 1 |
| Pagination | 440 |
| Date Published | Aug 25 2016 |
| ISBN Number | 1472-6963 (Electronic)<br/>1472-6963 (Linking) |
| Accession Number | 27561315 |
| Keywords | *Community care, *Convergent validity, *Correlation, *Costs of care, *InterRAI-HC, *Older adults, *Resource utilisation, *Routine care assessment, *RUD Lite, *Societal costs, Aged, Aged, 80 and over, Delivery of Health Care/economics/statistics & numerical data, Europe, Female, Geriatric Assessment, Health Care Costs/*statistics & numerical data, Health Resources, Home Care Services/*economics, Humans, Independent Living/*economics, Male, Models, Economic, Self Report |
| Abstract | BACKGROUND: The interRAI-Home Care (interRAI-HC) instrument is commonly used in routine care to assess care and service needs, resource utilisation and health outcomes of community dwelling home care clients. Potentially, the interRAI-HC can also be used to calculate societal costs in economic evaluations. The purpose of this study was to assess the convergent validity of the interRAI-HC instrument in comparison with the RUD Lite instrument for the calculation of societal costs among care-dependent community dwelling older adults. METHODS: A within-subject design was used. Participants were 65 years and older and received professional community care in five countries. The RUD Lite was administered by trained (research) nurses or self-reports within 4 weeks after the interRAI-HC assessment. Agreement between the interRAI-HC and RUD Lite estimates was assessed using Spearman's correlation coefficients. We hypothesised that there was strong correlation (Spearman's rho > 0.5) between resource utilisation estimates, costs of care estimates and total societal cost estimates derived from both instruments. RESULTS: Strong correlation was found between RUD Lite and interRAI-HC resource utilisation assessments for eight out of ten resource utilisation items. Total societal costs according to the RUD Lite were statistically significantly lower than according to the interRAI-HC (mean difference euro-804, 95 % CI -1340; -269). The correlation between the instruments for total societal costs and all six cost categories was strong. CONCLUSIONS: The interRAI-HC has good convergent validity as compared with the RUD-Lite instrument to estimate societal cost of resource utilisation in community dwelling older adults. Since interRAI-HC assessments are part of routine care in many community care organisations and countries already, this finding may increase the feasibility of performing economic evaluations among community dwelling older adults. |
| DOI | 10.1186/s12913-016-1702-1 |
| PMCID | PMC5000456 |
| Link | |
| Alternate Journal | BMC Health Serv Res |
