Health status of care home residents: practicality and construct validity of data collection by staff at scale

BACKGROUND: Medical diagnoses and assessed need for care are the prerequisites for planning and delivery of care to residents of care homes. Assessing the effectiveness of care is difficult. The aim of this study was to test the practicality and construct validity of the howRu health status measure using secondary analysis of a large data set. METHOD: The data came from a Bupa Care Homes Census in 2012, which covered 24 506 residents in 395 homes internationally (UK, Australia and New Zealand). Staff completed optical mark readable forms about each resident using a short generic health status measure, howRu. Response rates were used to assess practicality and expected relationships between health status and independent variables were used to assess the construct validity. RESULTS AND DISCUSSION: 19,438 forms were returned (79.3%) in 360 care homes (91.1%); complete health status data were recorded for 18 617 residents (95.8% of those returned). Missing values for any health status items mostly came from a small number of homes. The relationships between howRu and independent variables support construct validity. Factor analysis suggests three latent variables (discomfort, distress and disability/dependence). CONCLUSIONS: HowRu proved easy to use and practical at scale. The howRu health status measure shows good construct validity.