title: Discriminative validity and test-retest reliability of the Dellon-modified Moberg pick-up test in carpal tunnel syndrome patients.
abstract: There is a scarcity of validated hand performance tests with proven reliability for quantifying functional deficits in patients with carpal tunnel syndrome (CTS). The Dellon-modified Moberg pick-up test (DMMPUT), composed of commonly used daily objects, is potentially well suited for that purpose. This study was designed to evaluate the test-retest reliability and discriminative validity of the DMMPUT in CTS patients. We compared 162 CTS patients with 116 age-matched controls. CTS severity was determined based on electrophysiological parameters and Levine's Self-Assessment Questionnaire. The mean time to complete each subset of the DMMPUT by the CTS patients was compared with that by the healthy subjects. Test-retest reliability was examined in 46 CTS patients. Discriminative validity was demonstrated through a significant difference in test completion time between the CTS subjects and their age-matched controls. With few exceptions, the test scores declined with increasing severity of electrophysiological abnormalities and subjective symptom severity. Test-retest reliability of the DMMPUT was high with an intra-class correlation coefficient of 0.91. The DMMPUT has discriminative validity and high test-retest reliability in patients with CTS. It can be a useful standardized outcome measure to gauge disease severity.
authors.affiliation: Centre for Neuroscience Division of Physical Medicine and Rehabilitation Division of Plastic Surgery, University of Alberta, Edmonton, Canada.
authors.forename: Nasim
authors.initials: N
authors.lastname: Amirjani
authors.forename: Nigel L
authors.initials: NL
authors.lastname: Ashworth
authors.forename: Jaret L
authors.initials: JL
authors.lastname: Olson
authors.forename: Michael
authors.initials: M
authors.lastname: Morhart
authors.forename: K Ming
authors.initials: KM
authors.lastname: Chan
mesh_terms: D000328:Adult; D002349:Carpal Tunnel Syndrome / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009048:Motor Skills / Q000502:physiology; D009460:Neurologic Examination / Q000379:methods; D015203:Reproducibility of Results; D055815:Young Adult