Accuracy of nurse aides' functional health assessments of nursing home residents.

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Abstract
Background. Nurse aides provide assessments of nursing home residents' functional health for use in care planning and quality assurance. Nurse practitioner assessments can serve as a standard for analysis of nurse aides' accuracy. This study compared nurse aide to nurse practitioner assessments of nursing home residents' functional health with regard to possible bias and extent of correlation. Methods. Nurse aides' accuracy in assessing nursing home residents' activities of daily living was evaluated by comparisons to assessments performed by a master's-prepared nurse practitioner using four functional assessment instruments: the Barthel Index, the Katz Index of Activities of Daily Living, the Multidimensional Observation Scale for Elderly Subjects, and the Scaled Outcome Criteria. Data were collected in a 159-bed nonprofit nursing home licensed for skilled and intermediate care. Residents had a wide variety of functional and cognitive abilities and disabilities. Ninety-six nursing home residents provided data for the study. Functional health assessments by 24 nurse aides, each assessing 4 different nursing home residents, were compared to those of 1 nurse practitioner. Statistical analysis of accuracy used paired samples Mests and Pearson product moment correlation coefficients. Results. Nurse aide assessments and nurse practitioner assessments were highly correlated. Most functional health assessments evidenced no significant nurse aide bias. When bias was present it usually resulted from nurse aides electing more optimistic choices when using an assessment instrument that offered fewer response levels for rating residents. Conclusions. Nurse aides can accurately use well-calibrated instruments to assess nursing home residents' functional health. Demonstration of assessment accuracy in nurse aides, who provide the majority of direct care for nursing home residents, documented a valuable clinical resource for planning and evaluating resident care.

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