Test-retest reliability of the physical performance test for persons with Parkinson disease

Karen Paschal, Amber B. Oswald, Robert W. Siegmund, Susan E. Siegmund, Joseph Threlkeld

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Background and Purpose: Reliable measures are needed to document functional status and disease progression for people with Parkinson disease (PD). We, therefore, evaluated the reliability of the Physical Performance Test (PPT) for people with PD. Methods: Fourteen community-dwelling subjects with PD participated: 8 males, 6 females; modified Hoehn and Yahr Stages 2 and 2.5; mean age 62.4 years (±6.3). The test was administered twice, 1 week apart. The 7-item and 9-item summary scores of the PPT were each compared between sessions using repeated measures analysis of variance (ANOVA). The intraclass correlation coefficient (ICC) and method error (ME) were calculated to further assess reliability. Results: Between sessions, 7- and 9-item summed scores were not statistically different. The range of summed scores fell in the midst of the available score range for both the 7- and 9-item tests suggesting resistance to floor and ceiling effects. The ICCs showed good agreement (7-item = 0.818; 9-item = 0.895) indicating test reliability for this population. Based on the ME, an examiner can expect a 6% variation for the 7-item summary score and a 4% variation for the 9-item score summary between testing sessions. Conclusions: The 7- and 9-item PPTs were demonstrated to be reliable objective measures in individuals with PD. Simple props and brief administration time (10-15 minutes) make the test practical to use.

Original languageEnglish
Pages (from-to)82-86
Number of pages5
JournalJournal of Geriatric Physical Therapy
Volume29
Issue number3
StatePublished - 2006

Fingerprint

Reproducibility of Results
Parkinson Disease
Independent Living
Disease Progression
Analysis of Variance
Population

All Science Journal Classification (ASJC) codes

  • Geriatrics and Gerontology
  • Rehabilitation

Cite this

Test-retest reliability of the physical performance test for persons with Parkinson disease. / Paschal, Karen; Oswald, Amber B.; Siegmund, Robert W.; Siegmund, Susan E.; Threlkeld, Joseph.

In: Journal of Geriatric Physical Therapy, Vol. 29, No. 3, 2006, p. 82-86.

Research output: Contribution to journalArticle

@article{aae4f0f778084f61a410894b13b2239d,
title = "Test-retest reliability of the physical performance test for persons with Parkinson disease",
abstract = "Background and Purpose: Reliable measures are needed to document functional status and disease progression for people with Parkinson disease (PD). We, therefore, evaluated the reliability of the Physical Performance Test (PPT) for people with PD. Methods: Fourteen community-dwelling subjects with PD participated: 8 males, 6 females; modified Hoehn and Yahr Stages 2 and 2.5; mean age 62.4 years (±6.3). The test was administered twice, 1 week apart. The 7-item and 9-item summary scores of the PPT were each compared between sessions using repeated measures analysis of variance (ANOVA). The intraclass correlation coefficient (ICC) and method error (ME) were calculated to further assess reliability. Results: Between sessions, 7- and 9-item summed scores were not statistically different. The range of summed scores fell in the midst of the available score range for both the 7- and 9-item tests suggesting resistance to floor and ceiling effects. The ICCs showed good agreement (7-item = 0.818; 9-item = 0.895) indicating test reliability for this population. Based on the ME, an examiner can expect a 6{\%} variation for the 7-item summary score and a 4{\%} variation for the 9-item score summary between testing sessions. Conclusions: The 7- and 9-item PPTs were demonstrated to be reliable objective measures in individuals with PD. Simple props and brief administration time (10-15 minutes) make the test practical to use.",
author = "Karen Paschal and Oswald, {Amber B.} and Siegmund, {Robert W.} and Siegmund, {Susan E.} and Joseph Threlkeld",
year = "2006",
language = "English",
volume = "29",
pages = "82--86",
journal = "Journal of Geriatric Physical Therapy",
issn = "1539-8412",
publisher = "Lippincott Williams and Wilkins",
number = "3",

}

TY - JOUR

T1 - Test-retest reliability of the physical performance test for persons with Parkinson disease

AU - Paschal, Karen

AU - Oswald, Amber B.

AU - Siegmund, Robert W.

AU - Siegmund, Susan E.

AU - Threlkeld, Joseph

PY - 2006

Y1 - 2006

N2 - Background and Purpose: Reliable measures are needed to document functional status and disease progression for people with Parkinson disease (PD). We, therefore, evaluated the reliability of the Physical Performance Test (PPT) for people with PD. Methods: Fourteen community-dwelling subjects with PD participated: 8 males, 6 females; modified Hoehn and Yahr Stages 2 and 2.5; mean age 62.4 years (±6.3). The test was administered twice, 1 week apart. The 7-item and 9-item summary scores of the PPT were each compared between sessions using repeated measures analysis of variance (ANOVA). The intraclass correlation coefficient (ICC) and method error (ME) were calculated to further assess reliability. Results: Between sessions, 7- and 9-item summed scores were not statistically different. The range of summed scores fell in the midst of the available score range for both the 7- and 9-item tests suggesting resistance to floor and ceiling effects. The ICCs showed good agreement (7-item = 0.818; 9-item = 0.895) indicating test reliability for this population. Based on the ME, an examiner can expect a 6% variation for the 7-item summary score and a 4% variation for the 9-item score summary between testing sessions. Conclusions: The 7- and 9-item PPTs were demonstrated to be reliable objective measures in individuals with PD. Simple props and brief administration time (10-15 minutes) make the test practical to use.

AB - Background and Purpose: Reliable measures are needed to document functional status and disease progression for people with Parkinson disease (PD). We, therefore, evaluated the reliability of the Physical Performance Test (PPT) for people with PD. Methods: Fourteen community-dwelling subjects with PD participated: 8 males, 6 females; modified Hoehn and Yahr Stages 2 and 2.5; mean age 62.4 years (±6.3). The test was administered twice, 1 week apart. The 7-item and 9-item summary scores of the PPT were each compared between sessions using repeated measures analysis of variance (ANOVA). The intraclass correlation coefficient (ICC) and method error (ME) were calculated to further assess reliability. Results: Between sessions, 7- and 9-item summed scores were not statistically different. The range of summed scores fell in the midst of the available score range for both the 7- and 9-item tests suggesting resistance to floor and ceiling effects. The ICCs showed good agreement (7-item = 0.818; 9-item = 0.895) indicating test reliability for this population. Based on the ME, an examiner can expect a 6% variation for the 7-item summary score and a 4% variation for the 9-item score summary between testing sessions. Conclusions: The 7- and 9-item PPTs were demonstrated to be reliable objective measures in individuals with PD. Simple props and brief administration time (10-15 minutes) make the test practical to use.

UR - http://www.scopus.com/inward/record.url?scp=33846297020&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846297020&partnerID=8YFLogxK

M3 - Article

VL - 29

SP - 82

EP - 86

JO - Journal of Geriatric Physical Therapy

JF - Journal of Geriatric Physical Therapy

SN - 1539-8412

IS - 3

ER -