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14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT)

17.06. - 21.06.2019, Berlin

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Construct validity and responsiveness of the Assessment of Motor and Process skills (AMPS) in patients with hand-related disorders

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  • presenting/speaker Thea Birch Ransby - Diagnostisk Center Regionshospitalet Silkeborg, Silkeborg, Denmark
  • Helene Nørgaard Kristensen - Diagnostisk Center Fysio- og ergoterapi Silkeborg - HEM, Silkeborg, Denmark
  • Lisa Bay Johansen - Diagnostisk Center Fysio- og ergoterapi Silkeborg - HEM, Silkeborg, Denmark
  • Nanna Rolving - Diagnostisk Center Regionshospitalet Silkeborg, Silkeborg, Denmark

International Federation of Societies for Surgery of the Hand. International Federation of Societies for Hand Therapy. 14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT). Berlin, 17.-21.06.2019. Düsseldorf: German Medical Science GMS Publishing House; 2020. DocIFSHT19-1109

doi: 10.3205/19ifssh1499, urn:nbn:de:0183-19ifssh14990

Published: February 6, 2020

© 2020 Ransby et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/.

Outline

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Objective: To evaluate the validity and responsiveness of the AMPS in patients undergoing rehabilitation following hand-related disorder, in comparison to The Canadian Occupational Performance Measure (COPM), dynamometer and goniometer.

Materials and Methods: 56 patients referred to specialized hand rehabilitation were included. Construct validity and responsiveness were assessed by hypothesis testing. Construct validity was assessed by correlating, the baseline score of AMPS with the baseline scores of dynamometer, goniometer and COPM. Responsiveness was assessed by correlating, the change scores of each instrument with a Global Rating Scale (GRS) and furthermore the change scores of AMPS were correlated with the change scores of the other instruments.

Results: Regarding the construct validity of AMPS, it was shown that the different instruments captured other aspects of functional ability than did AMPS, as the correlations between AMPS and the other instruments were generally weak to low (r<0.25-0,49). AMPS turned out to be less responsive than COPM when correlated to the GRS, as a moderate correlation was seen for COPM (r=0.61,P=0.001) compared to the low correlations for AMPS-motor (r = 0.46,P = 0.004) and AMPS-process (r = 0.36,P = 0.028), which were more similar to the correlations of the change scores on the dynamometer (r = 0.35,P = 0.031) and goniometer (r = -0.35,P = 0.058) with the GRS.

Conclusions: Subject to the relatively small sample size the study showed that the construct validity of AMPS was moderate while the responsiveness was low in patients with hand-related disorder. The responsiveness was lower than that of COPM, although correlations were slightly higher than those of instruments of body function. Overall the study confirms that it is important to use occupationfocused/-based instruments for assessing the effect of rehabilitation, which is in line with the ICF framework.