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The Functional Gait Assessment in Older Adults: Validation Through Rasch Modeling

Marianne Beninato, Larry H. Ludlow
DOI: 10.2522/ptj.20150167 Published 1 April 2016
Marianne Beninato
M. Beninato, PT, DPT, PhD, Department of Physical Therapy, MGH Institute of Health Professions, 36 1st Ave, Boston, MA 02129 (USA).
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Larry H. Ludlow
L.H. Ludlow, PhD, Department of Educational Research, Measurement and Evaluation, Lynch School of Education, Boston College, Chestnut Hill, Massachusetts.
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Figures

Figure 2.
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Figure 2.

Person-item map without Functional Gait Assessment (FGA) items 7 (“gait with narrow base of support”), 8 (“gait with eyes closed”), and 9 (“ambulating backwards”). Patients are plotted on the map with those who are less able locating at the bottom of the map and those who are more able locating at the top of the map. Each “#” represents a count of 2 people, and each “.” is a count of 1 person. Associated logit values are indicated to the left of the map. FGA items are plotted on the right side of the map, with increasing difficulty from bottom to top. The mean ability and mean difficulty of items are both denoted by “M.” “S”=1 standard deviation from the mean; “T”=2 standard deviations from the mean.

Figure 1.
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Figure 1.

Person-item map. Patients are plotted on the map with those who are less able locating at the bottom of the map and those who are more able locating at the top of the map. Each “#” represents a count of 2 people, and each “.” is a count of 1 person. Associated logit values and Functional Gait Assessment (FGA) scores are indicated to the left of the map. FGA items are plotted on the right side of the map, with increasing difficulty from bottom to top. The mean ability and mean difficulty of items are both denoted by “M.” “S”=1 standard deviation from the mean; “T”=2 standard deviations from the mean.

Tables

Table 3.
Table 3.

Equivalence of FGA Raw Scores and Logit Estimates of Abilitya

  • ↵a FGA=Functional Gait Assessment, SE=standard error.

Table 1.
Table 1.

Participant Descriptive Information (N=179)a

  • ↵a NEC=not elsewhere classified.

Table 2.
Table 2.

Category Response Frequenciesa

  • ↵a FGA=Functional Gait Assessment.

Table 4.
Table 4.

Individual Item Statistics (N=179)a

  • ↵a FGA=Functional Gait Assessment, SE=standard error.

  • b Reported as ZSTD in the WINSTEPS software.

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Vol 96 Issue 4 Table of Contents
Physical Therapy: 96 (4)

Issue highlights

  • Confidence and Fear of Falling Avoidance Behavior in Older Adults
  • Reliability of the ECHOWS Tool
  • Functional Gait Assessment in Older Adults
  • Community-Based Exercise for People With Stroke
  • Knee Osteoarthritis and Promoting Exercise Adherence
  • Test Comparisons in Predicting Falls in Parkinson Disease
  • Scapular Position Using the Protractor Method
  • Physical Activity and Physical Fitness in Autism
  • Disability and Active Video Gaming
  • BNDF Genotype and Brain Function After Stroke
  • Electrodiagnostic Evaluation and Individuals With Volumetric Muscle Injury
  • Regenerative Rehabilitation and Advanced Technologies in Physical Therapy
  • Physical Therapists and Mechanotherapy
  • Translating Genomic Advances to Physical Therapist Practice
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The Functional Gait Assessment in Older Adults: Validation Through Rasch Modeling
Marianne Beninato, Larry H. Ludlow
Physical Therapy Apr 2016, 96 (4) 456-468; DOI: 10.2522/ptj.20150167

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The Functional Gait Assessment in Older Adults: Validation Through Rasch Modeling
Marianne Beninato, Larry H. Ludlow
Physical Therapy Apr 2016, 96 (4) 456-468; DOI: 10.2522/ptj.20150167
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Subjects

  • Geriatrics
    • Falls and Falls Prevention
  • Examination/Evaluation
    • Tests and Measurements
  • Neurology/Neuromuscular System
    • Balance

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