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5-Number Summary01:04

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In a dataset, the 5-number summary includes the minimum data value, the data value of the first quartile, the median data value or data value of the second quartile, the data value of the third quartile, and the maximum data value. These 5 data values can be visualized as a box and whisker plot.
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A z score (or standardized value) is measured in units of the standard deviation. It tells you how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a zero z score. It is important to note that the mean of the z scores is zero, and the standard deviation is one.
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A z score (or standardized value) is measured in units of the standard deviation. It indicates how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a zero z score. It is important to note that the mean of the z scores is zero, and the standard deviation is one.
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EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
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Same But Different: FIM Summary Scores May Mask Variability in Physical Functioning Profiles.

Steve R Fisher1, Addie Middleton2, James E Graham2

  • 1Department of Physical Therapy, University of Texas Medical Branch, Galveston, TX.

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|February 12, 2018
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Summary

Summary scores for physical functioning may not accurately reflect patient needs, especially in bathroom activities and stair negotiation. Further research is needed for clinically meaningful functional assessments.

Keywords:
GeriatricsMedicareRehabilitation

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Area of Science:

  • Rehabilitation Medicine
  • Gerontology
  • Health Services Research

Background:

  • The Functional Independence Measure (FIM) is widely used to assess physical functioning in rehabilitation settings.
  • Summary scores aim to provide a concise overview of a patient's functional status.
  • However, the clinical representativeness of these summary scores across diverse patient profiles requires examination.

Purpose of the Study:

  • To investigate how similar summary scores of physical functioning using the FIM may represent different patient clinical profiles.
  • To determine if FIM summary scores accurately reflect the need for physical assistance in specific activities.

Main Methods:

  • Retrospective cohort study of 765,441 Medicare fee-for-service beneficiaries discharged from inpatient rehabilitation.
  • Utilized FIM item scores to quantify independence in self-care and mobility domains.
  • Identified patients requiring "no physical assistance" using a rule and score-based approach.

Main Results:

  • Patients with FIM scores indicating no need for physical assistance frequently required help with bathroom activities (e.g., continence, transfers, hygiene) and stair negotiation.
  • Actual patient performance was often lower than suggested by FIM summary scores for self-care and mobility domains.
  • Discrepancies highlight potential limitations in relying solely on summary scores.

Conclusions:

  • FIM summary scores may not fully capture the nuanced physical assistance needs of patients post-rehabilitation.
  • Further research is essential to develop clinically meaningful descriptions of functional status based on individual FIM item performances.
  • Improved assessment methods are needed for accurate patient care planning.