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[Reliability of basic geriatric assessment].

H Meyer zu Schwabedissen1, G Nemitz, A Harms

  • 1Städtisches Klinikum Medizinische Klinik IV, Braunschweig.

Zeitschrift Fur Gerontologie Und Geriatrie
|April 18, 2000
PubMed
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The Geriatric Basis Assessment (GBA) shows moderate reliability, with patient differences explaining most variability. While correlated with the Barthel index, it is not a valid predictor for patient care allocation.

Area of Science:

  • Geriatric Medicine
  • Health Assessment Tools
  • Psychometrics

Context:

  • The Geriatric Basis Assessment (GBA) is a tool used in geriatric care.
  • Reliability and validity are crucial for assessment tools in patient care.
  • Comparison with existing tools like the Barthel index is necessary.

Purpose:

  • To investigate the reliability of the Geriatric Basis Assessment (GBA).
  • To compare the GBA with the Barthel index.
  • To explore the potential of the GBA for patient care allocation.

Summary:

  • Reliability analysis of the GBA using lambda 2 coefficients on data from 1037 patients indicated that 80% of item variability stems from patient differences, with 20% attributed to assessment inaccuracies.
  • Correlations between GBA items and the Barthel index were observed in 343 patients, but were too weak for predictive accuracy, suggesting overlapping yet distinct measurement aspects.

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  • The GBA's reliability is slightly lower than the Barthel index, and neither tool's validity could be determined without an external criterion, highlighting the need for further investigation into GBA's utility for optimal patient care allocation.

    • Impact:

    • Findings suggest the GBA's potential as a reliable assessment tool, but its validity for optimal patient care allocation requires further research.
    • The study emphasizes the importance of the GBA's comprehensive test profile over a single score for diagnosing geriatric patients and guiding care.
    • Identifying items influenced by therapy versus those remaining stable offers insights into treatment effectiveness and patient prognosis in geriatric care.