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Health and Quality of Life Outcomes

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Open Access 01-12-2018 | Research

Longitudinal construct validity of the minimum data set health status index

Authors: Aaron Jones, David Feeny, Andrew P. Costa

Published in: Health and Quality of Life Outcomes | Issue 1/2018

Abstract

Background

The Minimum Data Set Health Status Index (MDS-HSI) is a generic, preference-based health-related quality of life (HRQOL) measure derived by mapping items from the Resident Assessment Instrument – Minimum Data Set (RAI-MDS) assessment onto the Health Utilities Index Mark 2 classification system. While the validity of the MDS-HSI has been examined in cross-sectional settings, the longitudinal validity has not been explored. The objective of this study was to investigate the longitudinal construct validity of the MDS-HSI in a home care population.

Methods

This study utilized a retrospective cohort of home care patients in the Hamilton-Niagara-Haldimand-Brant health region of Ontario, Canada with at least two RAI-MDS Home Care assessments between January 2010 and December 2014. Convergent validity was assessed by calculating Spearman rank correlations between the change in MDS-HSI and changes in six validated indices of health domains that can be calculated from the RAI-MDS assessment. Known-groups validity was investigated by fitting multivariable linear regression models to estimate the mean change in MDS-HSI associated with clinically important changes in the six health domain indices and 15 disease symptoms from the RAI-MDS Home Care assessment, controlling for age and sex.

Results

The cohort contained 25,182 patients with two RAI-MDS Home Care assessments. Spearman correlations between the MDS-HSI change and changes in the health domain indices were all statistically significant and in the hypothesized small to moderate range [0.1 < ρ < 0.5]. Clinically important changes in all of the health domain indices and 13 of the 15 disease symptoms were significantly associated with clinically important changes in the MDS-HSI.

Conclusions

The findings of this study support the longitudinal construct validity of the MDS-HSI in home care populations. In addition to evaluating changes in HRQOL among home care patients in clinical research, economic evaluation, and health technology assessment, the MDS-HSI may be used in system-level applications using routinely collected population-level data.

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Title: Longitudinal construct validity of the minimum data set health status index
Authors: Aaron Jones
David Feeny
Andrew P. Costa
Publication date: 01-12-2018
Publisher: BioMed Central
Published in: Health and Quality of Life Outcomes / Issue 1/2018
Electronic ISSN: 1477-7525
DOI: https://doi.org/10.1186/s12955-018-0932-9

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Longitudinal construct validity of the minimum data set health status index

Abstract

Background

Methods

Results

Conclusions

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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