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Construct validity and test-retest reliability of the questionnaire rising and sitting down in lower-limb amputees

DE LAAT FA; ROMMERS GM; GEERTZEN JH; ROORDA LD
ARCH PHYS MED REHABIL , 2011, vol. 92, n° 8, p. 1305-1310
Doc n°: 152353
Localisation : Documentation IRR

D.O.I. : http://dx.doi.org/DOI:10.1016/j.apmr.2011.03.016
Descripteurs : EB3 - AMPUTATION DU MEMBRE INFERIEUR
Article consultable sur : http://www.archives-pmr.org

OBJECTIVE: To investigate the construct validity and
test-retest reliability of the Questionnaire Rising and Sitting Down (QR&S), a
patient-reported measure of activity limitations in rising and sitting down, in
lower-limb amputees. DESIGN: Cross-sectional study. SETTING: Outpatient
department of a rehabilitation center. PARTICIPANTS: Lower-limb amputees (N=171;
mean age +/- SD, 65+/-12y; 71% men; 83% vascular cause) participated in the
study, 33 of whom also participated in the reliability study. INTERVENTIONS: Not
applicable. MAIN OUTCOME MEASURES: Construct validity was investigated by testing
8 hypotheses: limitations in rising and sitting down according to the QR&S would
be: (1) greater in lower-limb amputees who are older, (2) independent of level of
amputation, (3) greater in lower-limb amputees with a bilateral amputation, and
(4) greater in lower-limb amputees who had rehabilitation treatment in a nursing
home. Furthermore, limitations in rising and sitting down will be positively
related to activity limitations according to (5) the Locomotor Capabilities Index
(LCI), (6) the questions about rising and sitting down in the LCI, (7) the
Climbing Stairs Questionnaire, and (8) the Walking Questionnaire. Construct
validity was quantified with an independent t test and Pearson correlation
coefficient. Test-retest reliability was assessed with a 3-week interval and
quantified with the intraclass correlation coefficient (ICC), standard error of
measurement, and smallest detectable difference (SDD). RESULTS: Construct
validity (7 of 8 null hypotheses not rejected) and test-retest reliability were
good (ICC=.84; 95% confidence interval, .65-.93; standard error of the
measurement=6.7%; SDD=18.6%). CONCLUSIONS: The QR&S has good construct validity
and good test-retest reliability in lower-limb amputees.
CI - Copyright (c) 2011 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS

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