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Concurrent validity of the NK hand dexterity test
Author(s) -
MacDermid Joy C,
Mulè Mary
Publication year - 2001
Publication title -
physiotherapy research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.509
H-Index - 49
eISSN - 1471-2865
pISSN - 1358-2267
DOI - 10.1002/pri.217
Subject(s) - concurrent validity , test (biology) , physical therapy , correlation , rating scale , pearson product moment correlation coefficient , psychology , spearman's rank correlation coefficient , medicine , criterion validity , population , physical medicine and rehabilitation , clinical psychology , psychometrics , statistics , developmental psychology , mathematics , construct validity , paleontology , geometry , environmental health , internal consistency , biology
Background and Purpose The present study evaluated the concurrent validity of the NK hand dexterity test (NKHDT) by use of three separate analyses: (1) the correlation between the NKHDT and a criterion comparator (Jebson's Hand Function Test (JHFT)); (2) the correlation between both dexterity tests and a patient‐rated function questionnaire; and (3) the ability of subscales to differentiate between subjects with and without upper extremity pathology. Method The study population included 40 individuals with a variety of musculoskeletal problems affecting the upper extremity and 10 individuals without any history of upper extremity problems. Both dexterity tests were administered on a single occasion according to a standard protocol. Subjects also completed a rating scale which evaluated self‐care, household work, work and recreation on an 0–10‐point scale. Results The validity of the NKHDT was supported in all three analyses because: (1) the correlation between the NKHDT and JHFT subtests was moderate to strong (Pearson's r=0.47–0.87) and stronger when the objects were more similar in size; (2) both scales correlated to a similar extent with patient‐rated function (Pearson's r=–0.34–0.67); and (3) all subscales were statistically different between subjects with and without upper extremity pathology (p<0.01). Conclusions The present study supports the use of the NKHDT as a measure of hand dexterity. Copyright © 2001 Whurr Publishers Ltd.