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Issues regarding aggregation of data in nursing systems research

L C Hughes, R A Anderson

    Journal of Nursing Measurement
    |January 1, 1994
    PubMed
    Summary

    Patient outcomes research requires careful consideration of analysis units. Aggregation procedures help measure group-level variables, with reliability estimation crucial for accurate findings in nursing studies.

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    Area of Science:

    • Nursing research
    • Health services research
    • Organizational behavior

    Background:

    • Patient outcomes research necessitates defining the unit of analysis for variables.
    • Research spans individual patient responses to nursing interventions and group-level outcomes.
    • Group-level outcomes research often involves unmeasurable variables, requiring data aggregation.

    Purpose of the Study:

    • To review conceptual and methodologic issues in data aggregation for patient outcomes research.
    • To illustrate the estimation of aggregated data reliability.

    Main Methods:

    • Review of conceptual and methodologic challenges in data aggregation.
    • Application of reliability estimation techniques to aggregated data.
    • Utilizing data from a study on skilled nursing unit structures.

    Main Results:

    • Identified key challenges in using aggregation procedures for group-level outcome variables.
    • Demonstrated methods for estimating the reliability of aggregated data.
    • Provided insights into the reliability of organizational context variables in nursing.

    Conclusions:

    • Proper conceptualization and measurement at the appropriate unit of analysis are vital.
    • Aggregation procedures are essential for measuring organizational variables in outcomes research.
    • Reliability estimation is critical for the valid use of aggregated data in nursing research.

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