Assessing feasibility, construct validity, and reliability of a new aged care-specific preference-based quality of life instrument: evidence from older Australians in residential aged care
Abstract Background Quality of Life-Aged Care Consumers (QOL-ACC) is a new older-person-specific quality of life instrument designed for application in quality assessment and economic evaluation in aged care. The QOL-ACC was designed from its inception with older people receiving aged care services...
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| Format: | Article |
| Language: | English |
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BMC
2022-12-01
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| Series: | Health and Quality of Life Outcomes |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12955-022-02065-y |
| _version_ | 1811190271914803200 |
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| author | J Khadka C Hutchinson R Milte J Cleland A Muller N Bowes J Ratcliffe |
| author_facet | J Khadka C Hutchinson R Milte J Cleland A Muller N Bowes J Ratcliffe |
| author_sort | J Khadka |
| collection | DOAJ |
| description | Abstract Background Quality of Life-Aged Care Consumers (QOL-ACC) is a new older-person-specific quality of life instrument designed for application in quality assessment and economic evaluation in aged care. The QOL-ACC was designed from its inception with older people receiving aged care services ensuring its strong content validity. Given that the QOL-ACC has already been validated in home care settings and a preference-weighted value set developed, we aimed to assess feasibility, construct validity and reliability of the QOL-ACC in residential aged care settings. Methods Individuals living in residential aged care facilities participated in an interviewer-facilitated survey. The survey included the QOL-ACC, QCE-ACC (quality of aged care experience measure) and two other preference-based quality of life instruments (ASCOT and EQ-5D-5L). Feasibility was assessed using missing data and ceiling/floor effects. Construct validity was assessed by exploring the relationship between the QOL-ACC and other instruments (convergent validity) and the QOL-ACC’s ability to discriminate varying levels of self-rated health and quality of life. Internal consistency reliability was assessed using Cronbach’s alpha (α). Results Of the 200 residents (mean age, 85 ± 7.7 years) who completed the survey, 60% were female and 69% were born in Australia. One in three participating residents self-rated their health as fair/poor. The QOL-ACC had no missing data but had small floor effects (0.5%) and acceptable ceiling effects (7.5%). It demonstrated moderate correlation with ASCOT (r = 0.51, p < 0.001) and EQ-5D-5L (r = 0.52, p < 0.001) and a stronger correlation with the QCE-ACC (r = 0.57, p < 0.001). Residents with poor self-rated health and quality of life had significantly lower scores on the QOL-ACC. The internal consistency reliability of the QOL-ACC and its dimensions was good (α = 0.70–0.77). Conclusions The QOL-ACC demonstrated good feasibility, construct validity and internal consistency reliability to assess aged care-related quality of life. Moderate correlations of the QOL-ACC and other instruments provide evidence of its construct validity and signifies that the QOL-ACC adds non-redundant and non-interchangeable information beyond the existing instruments. A stronger correlation with the QCE-ACC than other instruments may indicate that quality of life is more intimately connected with the care experience than either health- or social-related quality of life in residential aged care settings. |
| first_indexed | 2024-04-11T14:48:27Z |
| format | Article |
| id | doaj.art-b232979d412440f8b541699973334aa9 |
| institution | Directory Open Access Journal |
| issn | 1477-7525 |
| language | English |
| last_indexed | 2024-04-11T14:48:27Z |
| publishDate | 2022-12-01 |
| publisher | BMC |
| record_format | Article |
| series | Health and Quality of Life Outcomes |
| spelling | doaj.art-b232979d412440f8b541699973334aa92022-12-22T04:17:34ZengBMCHealth and Quality of Life Outcomes1477-75252022-12-0120111310.1186/s12955-022-02065-yAssessing feasibility, construct validity, and reliability of a new aged care-specific preference-based quality of life instrument: evidence from older Australians in residential aged careJ Khadka0C Hutchinson1R Milte2J Cleland3A Muller4N Bowes5J Ratcliffe6Health and Social Care Economics Group, Caring Future Institute, College of Nursing and Health Sciences, Flinders UniversityHealth and Social Care Economics Group, Caring Future Institute, College of Nursing and Health Sciences, Flinders UniversityHealth and Social Care Economics Group, Caring Future Institute, College of Nursing and Health Sciences, Flinders UniversityHealth and Social Care Economics Group, Caring Future Institute, College of Nursing and Health Sciences, Flinders UniversityCollege of Nursing and Health Sciences, Flinders UniversityUniting AgeWellHealth and Social Care Economics Group, Caring Future Institute, College of Nursing and Health Sciences, Flinders UniversityAbstract Background Quality of Life-Aged Care Consumers (QOL-ACC) is a new older-person-specific quality of life instrument designed for application in quality assessment and economic evaluation in aged care. The QOL-ACC was designed from its inception with older people receiving aged care services ensuring its strong content validity. Given that the QOL-ACC has already been validated in home care settings and a preference-weighted value set developed, we aimed to assess feasibility, construct validity and reliability of the QOL-ACC in residential aged care settings. Methods Individuals living in residential aged care facilities participated in an interviewer-facilitated survey. The survey included the QOL-ACC, QCE-ACC (quality of aged care experience measure) and two other preference-based quality of life instruments (ASCOT and EQ-5D-5L). Feasibility was assessed using missing data and ceiling/floor effects. Construct validity was assessed by exploring the relationship between the QOL-ACC and other instruments (convergent validity) and the QOL-ACC’s ability to discriminate varying levels of self-rated health and quality of life. Internal consistency reliability was assessed using Cronbach’s alpha (α). Results Of the 200 residents (mean age, 85 ± 7.7 years) who completed the survey, 60% were female and 69% were born in Australia. One in three participating residents self-rated their health as fair/poor. The QOL-ACC had no missing data but had small floor effects (0.5%) and acceptable ceiling effects (7.5%). It demonstrated moderate correlation with ASCOT (r = 0.51, p < 0.001) and EQ-5D-5L (r = 0.52, p < 0.001) and a stronger correlation with the QCE-ACC (r = 0.57, p < 0.001). Residents with poor self-rated health and quality of life had significantly lower scores on the QOL-ACC. The internal consistency reliability of the QOL-ACC and its dimensions was good (α = 0.70–0.77). Conclusions The QOL-ACC demonstrated good feasibility, construct validity and internal consistency reliability to assess aged care-related quality of life. Moderate correlations of the QOL-ACC and other instruments provide evidence of its construct validity and signifies that the QOL-ACC adds non-redundant and non-interchangeable information beyond the existing instruments. A stronger correlation with the QCE-ACC than other instruments may indicate that quality of life is more intimately connected with the care experience than either health- or social-related quality of life in residential aged care settings.https://doi.org/10.1186/s12955-022-02065-yQuality of LifePreference-based measureAged careResidential aged careQuality of care |
| spellingShingle | J Khadka C Hutchinson R Milte J Cleland A Muller N Bowes J Ratcliffe Assessing feasibility, construct validity, and reliability of a new aged care-specific preference-based quality of life instrument: evidence from older Australians in residential aged care Health and Quality of Life Outcomes Quality of Life Preference-based measure Aged care Residential aged care Quality of care |
| title | Assessing feasibility, construct validity, and reliability of a new aged care-specific preference-based quality of life instrument: evidence from older Australians in residential aged care |
| title_full | Assessing feasibility, construct validity, and reliability of a new aged care-specific preference-based quality of life instrument: evidence from older Australians in residential aged care |
| title_fullStr | Assessing feasibility, construct validity, and reliability of a new aged care-specific preference-based quality of life instrument: evidence from older Australians in residential aged care |
| title_full_unstemmed | Assessing feasibility, construct validity, and reliability of a new aged care-specific preference-based quality of life instrument: evidence from older Australians in residential aged care |
| title_short | Assessing feasibility, construct validity, and reliability of a new aged care-specific preference-based quality of life instrument: evidence from older Australians in residential aged care |
| title_sort | assessing feasibility construct validity and reliability of a new aged care specific preference based quality of life instrument evidence from older australians in residential aged care |
| topic | Quality of Life Preference-based measure Aged care Residential aged care Quality of care |
| url | https://doi.org/10.1186/s12955-022-02065-y |
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