Development and initial testing of the Penn Parkinson's Daily Activities Questionnaire.

ABSTRACT:

Objective

The aim of this work was to describe the development and psychometric analysis of the Penn Parkinson's Daily Activities Questionnaire. The questionnaire is an item response theory-based tool for rating cognitive instrumental activities of daily living in PD.

Methods

Candidate items for the Penn Parkinson's Daily Activities Questionnaire were developed through literature review and focus groups of patients and knowledgeable informants. Item selection and calibration of item-response theory parameters were performed using responses from a cohort of PD patients and knowledgeable informants (n = 388). In independent cohorts of PD patients and knowledgeable informants, assessments of test-retest reliability (n = 50), and construct validity (n = 68) of the questionnaire

SUBMITTER: Brennan L 

PROVIDER: S-EPMC4724261 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature