Abstract
To examine the cross-cultural applicability of the Communicative Participation Item Bank (CPIB) through a comparison of respondents with Parkinson's disease (PD) from the United States and New Zealand. A total of 428 respondents-218 from the United States and 210 from New Zealand-completed the self-report CPIB and a series of demographic questions. Differential item functioning (DIF) analyses were conducted to examine whether response bias was present across the 2 groups. No items were identified as having statistically significant DIF across the U.S. and N.Z. cohorts. The current CPIB items and scoring parameters are also suitable for use with respondents from New Zealand.
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