Article

This study examined the psychometric properties of item pools relevant to
upper-extremity function and activity performance and evaluated simulated 5-,
10-, and 15-item computer adaptive tests (CATs). In a multicenter,
cross-sectional study of 200 children and youth with brachial plexus birth palsy
(BPBP), parents responded to upper-extremity (n = 52) and activity (n = 34) items
using a 5-point response scale. We used confirmatory and exploratory factor
analysis, ordinal logistic regression, item maps, and standard errors to evaluate
the psychometric properties of the item banks. Validity was evaluated using
analysis of variance and Pearson correlation coefficients. Results show that the
two item pools have acceptable model fit, scaled well for children and youth with
BPBP, and had good validity, content range, and precision. Simulated CATs
performed comparably to the full item banks, suggesting that a reduced number of
items provide similar information to the entire set of items.
CI - Copyright (c) 2013 by the American Occupational Therapy Association, Inc.

Langue : ANGLAIS