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Psychometric properties of a modified wolf motor function test for people with mild and moderate upper-extremity hemiparesis

Psychometric properties of a modified wolf motor function test for people with mild and moderate upper-extremity hemiparesis
Psychometric properties of a modified wolf motor function test for people with mild and moderate upper-extremity hemiparesis
Objective: to test the necessity of videotaping, test-retest reliability, and item stability and validity of a modified Wolf Motor Function Test (WMFT) for people with mild and moderate chronic upper-extremity (UE) hemiparesis caused by stroke.

Design: raters of videotape versus direct observation; test-retest reliability over 3 observations, item stability, and criterion validity with upper-extremity Fugl-Meyer Assessment (FMA) in the mildly and moderately impaired groups.

Setting: academic research center.

Participants: sixty-six subjects with chronic UE hemiparesis who participated in a large intervention study. Subjects were classified into mild and moderate groups for additional analyses.

Interventions: not applicable.

Main outcome measures: mean and median times of task completion, functional ability, and strength (weight to box) measures of the WMFT. FMA scores for validity assessment.

Results: in a subgroup of 10 subjects, the intraclass correlation coefficient (ICC) for videotape versus direct observation ranged from .96 to .99. For the whole group, test-retest reliability using ICC2,1 ranged from .97 to .99; stability of the test showed that administration 1 differed from administrations 2 and 3 but administrations 2 and 3 did not differ; item analysis showed that 4 of 17 items changed across time, and validity, using a correlation with UE FMA, ranged from .86 to .89. Separate mild- and moderate-group analyses were similar to whole-group results.

Conclusions: videotaping the modified WMFT was not necessary for accurate scoring. The modified WMFT is reliable and valid as an outcome measure for people with chronic moderate and mild UE hemiparesis and is stable, but 1 repeat testing is recommended when practical
0003-9993
656-660
Whitall, Jill
9761aefb-be80-4270-bc1f-0e726399376e
Savin, Douglas N.
07a6d281-b24e-40f8-9fe2-466b5c8c6a7a
Harris-Love, Michelle
685cb898-4679-4146-84cd-6af8789ca7eb
Waller, Sandra McCombe
0ac309e5-ef78-4051-b0fa-1762a52c7c8a
Whitall, Jill
9761aefb-be80-4270-bc1f-0e726399376e
Savin, Douglas N.
07a6d281-b24e-40f8-9fe2-466b5c8c6a7a
Harris-Love, Michelle
685cb898-4679-4146-84cd-6af8789ca7eb
Waller, Sandra McCombe
0ac309e5-ef78-4051-b0fa-1762a52c7c8a

Whitall, Jill, Savin, Douglas N., Harris-Love, Michelle and Waller, Sandra McCombe (2006) Psychometric properties of a modified wolf motor function test for people with mild and moderate upper-extremity hemiparesis. Archives of Physical Medicine and Rehabilitation, 87 (5), 656-660. (doi:10.1016/j.apmr.2006.02.004). (PMID:16635628)

Record type: Article

Abstract

Objective: to test the necessity of videotaping, test-retest reliability, and item stability and validity of a modified Wolf Motor Function Test (WMFT) for people with mild and moderate chronic upper-extremity (UE) hemiparesis caused by stroke.

Design: raters of videotape versus direct observation; test-retest reliability over 3 observations, item stability, and criterion validity with upper-extremity Fugl-Meyer Assessment (FMA) in the mildly and moderately impaired groups.

Setting: academic research center.

Participants: sixty-six subjects with chronic UE hemiparesis who participated in a large intervention study. Subjects were classified into mild and moderate groups for additional analyses.

Interventions: not applicable.

Main outcome measures: mean and median times of task completion, functional ability, and strength (weight to box) measures of the WMFT. FMA scores for validity assessment.

Results: in a subgroup of 10 subjects, the intraclass correlation coefficient (ICC) for videotape versus direct observation ranged from .96 to .99. For the whole group, test-retest reliability using ICC2,1 ranged from .97 to .99; stability of the test showed that administration 1 differed from administrations 2 and 3 but administrations 2 and 3 did not differ; item analysis showed that 4 of 17 items changed across time, and validity, using a correlation with UE FMA, ranged from .86 to .89. Separate mild- and moderate-group analyses were similar to whole-group results.

Conclusions: videotaping the modified WMFT was not necessary for accurate scoring. The modified WMFT is reliable and valid as an outcome measure for people with chronic moderate and mild UE hemiparesis and is stable, but 1 repeat testing is recommended when practical

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More information

Published date: May 2006
Organisations: Faculty of Health Sciences

Identifiers

Local EPrints ID: 361953
URI: http://eprints.soton.ac.uk/id/eprint/361953
ISSN: 0003-9993
PURE UUID: 3c29247e-62db-414f-9e03-c9e94522f61a

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Date deposited: 06 Feb 2014 13:18
Last modified: 16 Jul 2019 21:12

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