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Arch Phys Med Rehabil. 2004 May;85(5):743-8.

Reliability, validity, and responsiveness of the locomotor capabilities index in adults with lower-limb amputation undergoing prosthetic training.

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Unit of Occupational Rehabilitation and Ergonomics, Rehabilitation Institute of Veruno, Veruno, Italy.



To assess the reliability, validity, and responsiveness of both the standard and revised Locomotor Capabilities Index (LCI) in people with lower-limb amputation who undergo prosthetic training.


Reliability and validity study.


Two freestanding rehabilitation centers.


Fifty inpatients with a recent unilateral lower-limb amputation.


Not applicable. Main outcome measures The standard LCI and a new version with a 5-level ordinal scale (LCI-5) were tested for internal consistency, test-retest reliability, ceiling effect, and effect size. The construct validity of both versions was analyzed by correlation with the Rivermead Mobility Index, a timed walking test, and the FIM instrument.


The Cronbach alpha of both LCI versions was.95. The item-to-total correlations (Spearman rho) ranged from.50 to.87 (P<.0001 for all). The percent agreement and kappa values for the item scores ranged, respectively, from 78.4% to 100% and.58 to 1.00 in the LCI, and from 75.7% to 97.3% and.54 to.96 in the LCI-5. The intraclass correlation coefficient (model 2,1) for the total scores was.98 for both versions; the Bland-Altman plot revealed no systematic trend for either version. Both the LCI and LCI-5 correlated with all criterion measures (rho range,.61-.76), with the LCI-5 showing a larger effect size during the rehabilitation period and a lower ceiling effect. Patients with transtibial amputation were more independent in performing activities than were those with transfemoral amputation; their locomotor capability negatively correlated with age.


Both the LCI and LCI-5 captured the global locomotor ability of people with lower-limb amputation during prosthetic training. The new LCI-5 presents similar and sometimes better psychometric properties than the standard LCI.

[Indexed for MEDLINE]

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