TY - JOUR
T1 - Reliability, validity, responsiveness, and minimal important change of the Disablities of the Arm, Shoulder and Hand and Constant-Murley scores in patients with a humeral shaft fracture
AU - Mahabier, Kiran C.
AU - Den Hartog, Dennis
AU - Theyskens, Nina
AU - Verhofstad, Michael H. J.
AU - Van Lieshout, Esther M. M.
AU - Bos, P. Koen
AU - Bronkhorst, Maarten W. G. A.
AU - Bruijninckx, Milko M. M.
AU - De Haan, Jeroen
AU - Den Hoed, P. Ted
AU - Eversdijk, Martin G.
AU - Goslings, J. Carel
AU - Haverlag, Robert
AU - Heetveld, Martin J.
AU - Kerver, Albert J. H.
AU - Kolkman, Karel A.
AU - Leenhouts, Peter A.
AU - Meylaerts, Sven A. G.
AU - Onstenk, Ron
AU - Poeze, Martijn
AU - Poolman, Rudolf W.
AU - Punt, Bas J.
AU - Ritchie, Ewan D.
AU - Roerdink, W. Herbert
AU - Roukema, Gert R.
AU - Sintenie, Jan Bernard
AU - Soesman, Nicolaj M. R.
AU - Van der Elst, Maarten
AU - Van der Heijden, Frank H. W. M.
AU - Van der Linden, Frits M.
AU - Van der Zwaal, Peer
AU - Van Dijk, Jan P.
AU - Van Jonbergen, Hans-Peter W.
AU - Verleisdonk, Egbert J. M. M.
AU - Vroemen, Jos P. A. M.
AU - Waleboer, Marco
AU - Wittich, Philippe
AU - Zuidema, Wietse P.
PY - 2017/1
Y1 - 2017/1
N2 - Background: The Disabilities of the Arm, Shoulder and Hand (DASH) and Constant-Murley scores are commonly used instruments. The DASH is patient-reported, and the Constant-Murley combines a clinician-reported and a patient-reported part. For patients with a humeral shaft fracture, their validity, reliability, responsiveness, and minimal important change (MIC) have not been published. This study evaluated the measurement properties of these instruments in patients who sustained a humeral shaft fracture. Methods: The DASH and Constant-Murley instruments were completed 5 times until 1 year after trauma. Pain score, Short Form 36, and EuroQol-5D were completed for comparison. Internal consistency was determined by the Cronbach alpha. Construct and longitudinal validity were evaluated by assessing hypotheses about expected Spearman rank correlations in scores and change scores, respectively, between patient-reported outcome measures (sub) scales. The smallest detectable change (SDC) was calculated. The MIC was determined using an anchor-based approach. The presence of floor and ceiling effects was determined. Results: A total of 140 patients were included. Internal consistency was sufficient for DASH (Cronbach alpha = 0.96) but was insufficient for Constant-Murley (alpha = 0.61). Construct and longitudinal validity were sufficient for both patient-reported outcome measures (>75% of correlations hypothesized correctly). The MIC and SDC were 6.7 (95% confidence interval, 5.0-15.8) and 19.0 (standard error of measurement, 6.9), respectively, for DASH and 6.1 (95% CI-6.8 to 17.4) and 17.7 (standard error of measurement, 6.4), respectively, for Constant-Murley. Conclusions: The DASH and Constant-Murley are valid instruments for evaluating outcome in patients with a humeral shaft fracture. Reliability was only shown for the DASH, making this the preferred instrument. The observed MIC and SDC values provide a basis for sample size calculations for future research.
AB - Background: The Disabilities of the Arm, Shoulder and Hand (DASH) and Constant-Murley scores are commonly used instruments. The DASH is patient-reported, and the Constant-Murley combines a clinician-reported and a patient-reported part. For patients with a humeral shaft fracture, their validity, reliability, responsiveness, and minimal important change (MIC) have not been published. This study evaluated the measurement properties of these instruments in patients who sustained a humeral shaft fracture. Methods: The DASH and Constant-Murley instruments were completed 5 times until 1 year after trauma. Pain score, Short Form 36, and EuroQol-5D were completed for comparison. Internal consistency was determined by the Cronbach alpha. Construct and longitudinal validity were evaluated by assessing hypotheses about expected Spearman rank correlations in scores and change scores, respectively, between patient-reported outcome measures (sub) scales. The smallest detectable change (SDC) was calculated. The MIC was determined using an anchor-based approach. The presence of floor and ceiling effects was determined. Results: A total of 140 patients were included. Internal consistency was sufficient for DASH (Cronbach alpha = 0.96) but was insufficient for Constant-Murley (alpha = 0.61). Construct and longitudinal validity were sufficient for both patient-reported outcome measures (>75% of correlations hypothesized correctly). The MIC and SDC were 6.7 (95% confidence interval, 5.0-15.8) and 19.0 (standard error of measurement, 6.9), respectively, for DASH and 6.1 (95% CI-6.8 to 17.4) and 17.7 (standard error of measurement, 6.4), respectively, for Constant-Murley. Conclusions: The DASH and Constant-Murley are valid instruments for evaluating outcome in patients with a humeral shaft fracture. Reliability was only shown for the DASH, making this the preferred instrument. The observed MIC and SDC values provide a basis for sample size calculations for future research.
KW - Humeral shaft fracture
KW - DASH
KW - Constant-Murley
KW - patient reported outcome measure
KW - measurement properties
KW - responsiveness
KW - reliability
KW - validity
U2 - 10.1016/j.jse.2016.07.072
DO - 10.1016/j.jse.2016.07.072
M3 - Article
C2 - 27745806
SN - 1058-2746
VL - 26
SP - E1-E12
JO - Journal of Shoulder and Elbow Surgery
JF - Journal of Shoulder and Elbow Surgery
IS - 1
ER -