Minimal clinically important difference of the L Test for individuals with lower limb amputation: A pilot study

作者：Rushton Paula W; Miller William C^*; Deathe A Barry

来源：Prosthetics and Orthotics International, 2015, 39(6): 470-476.

DOI：10.1177/0309364614545418

• Responsiveness
• minimal clinically important difference
• ambulation
• amputation
• outcome measure

Background: The L Test is a reliable/valid clinical evaluation of mobility that measures walking speed in seconds. It can be used with individuals with lower limb amputation. Responsiveness of the L Test is not yet determined.
Objectives: The purpose of this pilot study was to determine how well the L Test identified individuals with a lower limb amputation who have/have not undergone a minimal clinically important difference.
Study design: Prospective follow-up study.
Methods: In total, 33 individuals with lower limb amputation, deemed to require a major intervention, were recruited consecutively from a follow-up clinic. Participants completed the L Test at baseline and follow-up. A Global Rating Change scale was also completed at follow-up.
Results: The participants had a mean age standard deviation of 60 13.0years, and 81.8% had a transtibial amputation. The mean +/- standard deviation for the L Test change scores was 6.0 +/- 13.9. The area under the curve was 0.67, and the minimal clinically important difference was 4.5 s.
Conclusions: The L Test identified individuals as having an important clinical change. Results must be interpreted with caution, as the accuracy, based on the Global Rating Change scale, is low. Further inquiry into the L Test is encouraged.

• 出版日期2015-12