Publication date: Jan 29, 2025

To assess the feasibility of capturing older care home residents’ quality of life (QoL) in digital social care records and the construct validity (hypothesis testing) and internal consistency (Cronbach’s alpha) of four QoL measures. Cross-sectional data collected in wave 1 of the DACHA (Developing resources And minimum dataset for Care Homes’ Adoption) study, a mixed-methods pilot of a prototype minimum dataset (MDS). Care homes (with or without nursing) registered to provide care for older adults (>65 years) and/or those living with dementia. All homes used a digital record system from one of two suppliers. Data were extracted from 748 residents. All permanent residents, aged 65 years or older, were eligible to participate, including those lacking capacity to consent. Temporary residents and residents in their last weeks of life were excluded. The English language versions of Adult Social Care Outcomes Toolkit (ASCOT)-Proxy-Resident, ICEpop CAPability measure for Older people (ICECAP-O), EQ-5D-5L proxy and the QUALIDEM were added to the digital record. As there have not been any previous studies of the structural validity of the English language version of the QUALIDEM, ordinal exploratory factor analysis (EFA) was applied for this measure only. Feasibility (% missing by software provider and measure), % floor/ceiling effects (>15% at lower/upper end of the scales), convergent or divergent construct validity (criterion of >75% of hypotheses accepted) and internal consistency (Cronbach’s alpha ≥0. 7) were assessed for all four measures. The ordinal EFA of QUALIDEM did not replicate the findings of previous research. A six-factor (36 item) solution was proposed and used in all subsequent analyses. There were low rates of missing data (

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