It is essential for neuroscience nurses everywhere to have reliable and valid instruments with which to measure functional ability, but reliability and validity have yet to be reported on the adult Alpha Functional Independence Measure (AlphaFIM) in England. The aim of this study was to determine the reliability and validity of the adult AlphaFIM instrument. Reliability was estimated using Cronbach's alpha. Validity was examined by comparing adult AlphaFIM instrument scores with Barthel Index scores and by factor analysis in a group of 551 patients admitted to acute medical units. Cronbach's alpha for the 6-item adult AlphaFIM instrument was .90. The correlation between the adult AlphaFIM instrument and the Barthel Index was .68 (p < .001). The factor analysis supported a one-factor solution for the 6-item adult AlphaFIM instrument. This is the first report of reliability and validity on this instrument. The adult AlphaFIM instrument appears to be a reliable and valid tool with which to measure functional ability in an acute medical geriatric population in England.
Jacqueline McClaran, MD, was an associate medical director at the Oxford Radcliffe Hospitals Trust and associate director of clinical studies at the University of Oxford Medical School, Headington, Oxford, United Kingdom, at the time this research was conducted.
Janette Davies, RN MSc PhD, is a research associate at International Gender Studies, University of Oxford and a staff nurse at the Oxford Radcliffe Hospitals Trust, Headington, Oxford, United Kingdom.
Derek Ng, MSc RSW, is a research assistant at the School of Health and Social Care, Oxford Brookes University, Headington, Oxford, United Kingdom.
Questions or comments about this article may be directed to Janice L. Hinkle, RN PhD CNRN, at hinkle@CUA.edu. She was a senior research fellow funded by the Medical Research Council at the University of Oxford Acute Stroke Programme, Nuffield Department of Clinical Medicine Level 7, John Radcliffe Hospital Headington, Oxford, United Kingdom, at the time this research was conducted.