Identifying Relevant Concepts for the Development of a Communicative Participation Item Bank for Children and Adolescents: A Systematic Review of Existing Instruments.

PURPOSE: This study aims to systematically identify items that measure communicative participation from measurement instruments that measure (aspects of) communication and/or participation in children and adolescents (5-18 years old) with communication disorders, for developing an item bank. METHOD: A systematic literature search was performed in MEDLINE and Embase to search for patient-reported outcome measures (PROMs) or parent reports measuring aspects of communication and/or participation in children and adolescents. The individual items of the included measurement instruments were reviewed on whether they measure communicative participation. The items were then classified into one of the International Classification of Functioning, Disability and Health (ICF) for Children and Youth (World Health Organization, 2007) domains of activities and participation. RESULTS: A total of 29 instruments were found, nine PROMs and 20 parent reports. One hundred forty-five items were identified that measure communicative participation. From these 145 items, 74 were retrieved from PROMs (51%), and 71 were retrieved from parent reports (49%). The majority of items were classified in ICF Domain 7, interpersonal interactions and relationships (73.8%), followed by Domain 8, major life areas (13.8%), and Domain 9, community, social, and civic life (8.3%). Only a few items were found in Domains 5 and 6, and none was found in Domains 1, 2, and 4. CONCLUSIONS: We identified 145 items potentially useful for developing an item bank addressing communicative participation in children and adolescents with communication disorders. However, item development in collaboration with the target population is needed to ensure that these items fully reflect the construct.

Development and Diagnostic Accuracy of a Shortened Dutch Naming Test for People with Aphasia Using Item Response Theory.

OBJECTIVE: The first objective was to assess the psychometric properties of the 92-item Dutch Naming Test (DNT-92), developed to assess word finding difficulties in people with aphasia, using Item Response Theory (IRT). The second objective was to select suitable items for a short version with a discriminative purpose. METHOD: This study has a retrospective, psychometric research design, in which 510 DNT-92-forms of people with aphasia and 192 DNT-forms of healthy participants were used for analyses. An IRT analysis was performed and information on the item- and person parameters was obtained. Item selection for the short version was based on a combination of the discriminative ability of the items and their estimated theta or difficulty. Items with the highest information load, and a difficulty parameter in the range of overlap between the sample of people with aphasia and healthy participants were selected. RESULTS: A 2-PL IRT analysis showed best fit to the data. Assumptions of unidimensionality, local independence, and monotonicity were met. Items were removed incrementally, whilst checking sensitivity and specificity of the remaining short form. A selection of six items proved optimal in terms of sensitivity and specificity, with an area under the curve value of 0.85. Differences were found between participants younger than 70 and older. CONCLUSIONS: The IRT assumptions for the DNT-92 were met, indicating that the test has good psychometric properties. A reduction of items to just six items proved possible, leading to a reliable six item short form with a discriminatory purpose.