Lower Extremity Functional Scale (LEFS): Difference between revisions
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== Objective == | == Objective == | ||
The objective of the Lower Extremity Functional Scale (LEFS) is to measure "patients' initial function, ongoing progress, and outcome" for a wide range of lower-extremity conditions.<ref name="Binkley et al.">Binkley JM, Stratford PW, Lott SA, Riddle DL. The lower extremity functional scale (LEFS): scale development, measurement properties, and clinical application. Phys Ther 1999;79:371-383.</ref><ref name="Rehab Measures">Rehabilitation Measures Database Lower Extremity Functional Scale http://www.rehabmeasures.org/Lists/RehabMeasures/DispForm.aspx?ID=1113 (accessed 24 Mar 2015).</ref> | The objective of the Lower Extremity Functional Scale (LEFS) is to measure "patients' initial function, ongoing progress, and outcome" for a wide range of lower-extremity conditions.<ref name="Binkley et al.">Binkley JM, Stratford PW, Lott SA, Riddle DL. The lower extremity functional scale (LEFS): scale development, measurement properties, and clinical application. Phys Ther 1999;79:371-383.</ref><ref name="Rehab Measures">Rehabilitation Measures Database Lower Extremity Functional Scale http://www.rehabmeasures.org/Lists/RehabMeasures/DispForm.aspx?ID=1113 (accessed 24 Mar 2015).</ref><br> | ||
== Intended Population | == Intended Population == | ||
The LEFS is intended for use on adults with lower extremity conditions.<ref name="Binkley et al." /><ref name="Rehab Measures" /> | The LEFS is intended for use on adults with lower extremity conditions.<ref name="Binkley et al." /><ref name="Rehab Measures" /> | ||
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Example Questionnaire: {{pdf|LEFS.pdf|Lower Extremity Functional Scale}} | Example Questionnaire: {{pdf|LEFS.pdf|Lower Extremity Functional Scale}} | ||
{{#ev:youtube|4CDhRMZCWQ4}}<ref>Fillechaud. Scoring the LEFS. Available from: https://www.youtube.com/watch?v=4CDhRMZCWQ4 [last accessed 24/03/2015]</ref><br> | |||
== Evidence == | == Evidence == | ||
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The capacity of the LEFS to detect change in lower-extremity function appears to be superior to that of the SF-36 physical function subscale, as indicated by higher correlations with an external prognostic rating of change.<ref name="Binkley et al." /><br> | The capacity of the LEFS to detect change in lower-extremity function appears to be superior to that of the SF-36 physical function subscale, as indicated by higher correlations with an external prognostic rating of change.<ref name="Binkley et al." /><br> | ||
=== Miscellaneous | === Miscellaneous === | ||
The LEFS has an error of +/- 5 points. That is, the tabulated score is within 5 points of a patient's "true" score.<ref name="Binkley et al." /><br> | The LEFS has an error of +/- 5 points. That is, the tabulated score is within 5 points of a patient's "true" score.<ref name="Binkley et al." /><br> | ||
== Links == | == Links == | ||
[http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCoQFjAA&url=http%3A%2F%2Fwww.mccreadyfoundation.org%2Fdocuments%2FLEFS.pdf&ei=8Y_pTrvQEoG2tweXq8m9Cg&usg=AFQjCNHtb01y5m2yfn4VRNR-YDAZIux28Q Lower Extremity Functional Scale (McReady Foundation]) | *[http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCoQFjAA&url=http%3A%2F%2Fwww.mccreadyfoundation.org%2Fdocuments%2FLEFS.pdf&ei=8Y_pTrvQEoG2tweXq8m9Cg&usg=AFQjCNHtb01y5m2yfn4VRNR-YDAZIux28Q Lower Extremity Functional Scale (McReady Foundation]) | ||
*[https://www.emoryhealthcare.org/physical-therapy/pdf/hip-lefs.pdf Lower Extremity Functional Scale (Emory Healthcare)] | |||
[https://www.emoryhealthcare.org/physical-therapy/pdf/hip-lefs.pdf Lower Extremity Functional Scale (Emory Healthcare)] | |||
== Recent Related Research (from [http://www.ncbi.nlm.nih.gov/pubmed/ Pubmed]) == | == Recent Related Research (from [http://www.ncbi.nlm.nih.gov/pubmed/ Pubmed]) == | ||
Revision as of 09:03, 4 May 2016
Original Editor - Emily Hanson
Top Contributors - Emily Hanson, Naomi O'Reilly, Kim Jackson, Evan Thomas, Admin, Vidya Acharya, Lucinda hampton, Disha Rupareliya, WikiSysop, Mandeepa Kumawat, Shaimaa Eldib and Rishika Babburu
Objective[edit | edit source]
The objective of the Lower Extremity Functional Scale (LEFS) is to measure "patients' initial function, ongoing progress, and outcome" for a wide range of lower-extremity conditions.[1][2]
Intended Population[edit | edit source]
The LEFS is intended for use on adults with lower extremity conditions.[1][2]
Method of Use[edit | edit source]
The LEFS is a self-report questionnaire. Patients answer the question "Today, do you or would you have any difficulty at all with:" in regards to twenty different everyday activities.[1][2]
Patients select an answer from the following scale for each activity listed:
- Extreme Difficulty or Unable to Perform Activity
- Quite a Bit of Difficulty
- Moderate Difficulty
- A Little Bit of Difficulty
- No Difficulty
The patient's score is tallied at the bottom of the page. The maximum possible score is 80 points, indicating very high function. The minimum possible score is 0 points, indicating very low function.
Example Questionnaire: Lower Extremity Functional Scale
Evidence[edit | edit source]
Reliability[edit | edit source]
Internal reliability for the LEFS is excellent (α=0.96). Test-retest reliability estimates were R=.86 (95% lower limit CI=.80) for the entire sample (n=98) and R=.94 (95% lower limit CI=.89) for the subset of patients with more chronic conditions (n=31).[1]
Validity[edit | edit source]
The LEFS is a valid tool as compared to the SF-36.[1]
Responsiveness[edit | edit source]
The minimum detectable change (MDC) for the LEFS is 9 points. That is, a change of more than 9 points represents a true change in the patient's condition.[1]
The minimum clinically important difference (MCID) for the LEFS is 9 points. That is, "Clinicians can be reasonably confident that a change of greater than 9 points is... a clinically meaningful functional change."[1]
The capacity of the LEFS to detect change in lower-extremity function appears to be superior to that of the SF-36 physical function subscale, as indicated by higher correlations with an external prognostic rating of change.[1]
Miscellaneous[edit | edit source]
The LEFS has an error of +/- 5 points. That is, the tabulated score is within 5 points of a patient's "true" score.[1]
Links[edit | edit source]
- Lower Extremity Functional Scale (McReady Foundation)
- Lower Extremity Functional Scale (Emory Healthcare)
Recent Related Research (from Pubmed)[edit | edit source]
References[edit | edit source]
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Binkley JM, Stratford PW, Lott SA, Riddle DL. The lower extremity functional scale (LEFS): scale development, measurement properties, and clinical application. Phys Ther 1999;79:371-383.
- ↑ 2.0 2.1 2.2 Rehabilitation Measures Database Lower Extremity Functional Scale http://www.rehabmeasures.org/Lists/RehabMeasures/DispForm.aspx?ID=1113 (accessed 24 Mar 2015).
- ↑ Fillechaud. Scoring the LEFS. Available from: https://www.youtube.com/watch?v=4CDhRMZCWQ4 [last accessed 24/03/2015]
