The Achilles Tendon Length Measure and the Achilles Tendon Resting Angle show acceptable construct validity using the Copenhagen Achilles Length Measure as gold standard
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The Achilles Tendon Length Measure and the Achilles Tendon Resting Angle show acceptable construct validity using the Copenhagen Achilles Length Measure as gold standard. / Hansen, Maria Swennergren; Kristensen, Morten Tange; Hölmich, Per; Barfod, Kristoffer Weisskrichner.
In: Foot and Ankle Surgery, Vol. 27, No. 6, 2021, p. 655-659.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The Achilles Tendon Length Measure and the Achilles Tendon Resting Angle show acceptable construct validity using the Copenhagen Achilles Length Measure as gold standard
AU - Hansen, Maria Swennergren
AU - Kristensen, Morten Tange
AU - Hölmich, Per
AU - Barfod, Kristoffer Weisskrichner
N1 - Publisher Copyright: © 2020 European Foot and Ankle Society
PY - 2021
Y1 - 2021
N2 - Background: Elongation of the Achilles tendon after rupture is a frequent complication. The Achilles Tendon Length Measure (ATLM) and the Achilles Tendon Resting Angle (ATRA) are indirect length measures using the resting angle of the ankle. Copenhagen Achilles Length Measure (CALM) is a direct ultrasound measure. The purpose of this study was to examine the construct validity of ATLM and ATRA using CALM as gold standard. Methods: As the three measurements measure slightly different constructs and have different scales a direct comparison was not possible. Instead a mixed linear regression model was performed investigating the three models: CALM-ATRA, CALMATLM and ATRA-ATLM. Results: 130 patients were available for analysis. All three regression models demonstrated a statistically significant (p < 0.01) linear relationship and acceptable certainty of the estimates. Conclusion: ATRA and ATLM were found to have acceptable construct validity when using CALM as gold standard for assessing tendon elongation after an Achilles tendon rupture.
AB - Background: Elongation of the Achilles tendon after rupture is a frequent complication. The Achilles Tendon Length Measure (ATLM) and the Achilles Tendon Resting Angle (ATRA) are indirect length measures using the resting angle of the ankle. Copenhagen Achilles Length Measure (CALM) is a direct ultrasound measure. The purpose of this study was to examine the construct validity of ATLM and ATRA using CALM as gold standard. Methods: As the three measurements measure slightly different constructs and have different scales a direct comparison was not possible. Instead a mixed linear regression model was performed investigating the three models: CALM-ATRA, CALMATLM and ATRA-ATLM. Results: 130 patients were available for analysis. All three regression models demonstrated a statistically significant (p < 0.01) linear relationship and acceptable certainty of the estimates. Conclusion: ATRA and ATLM were found to have acceptable construct validity when using CALM as gold standard for assessing tendon elongation after an Achilles tendon rupture.
KW - Achilles tendon rupture
KW - Elongation
KW - Outcome measure
KW - Validity
U2 - 10.1016/j.fas.2020.08.004
DO - 10.1016/j.fas.2020.08.004
M3 - Journal article
C2 - 32873503
AN - SCOPUS:85089993613
VL - 27
SP - 655
EP - 659
JO - Foot and Ankle Surgery
JF - Foot and Ankle Surgery
SN - 1268-7731
IS - 6
ER -
ID: 302197355