Evaluation of an item bank for a computerized adaptive test of activity in children with cerebral palsy.
BACKGROUND: Contemporary clinical assessments of activity are needed across the age span for children with cerebral palsy (CP). Computerized adaptive testing (CAT) has the potential to efficiently administer items for children across wide age spans and functional levels. OBJECTIVE: The objective of...
| Publicado en: | Physical Therapy Vol. 89; no. 6; pp. 589 - 601 |
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| Autores principales: | , , , , , , , , , |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Jun2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105351327&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105351327 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00319023 PTH jtl: Physical Therapy issn: 00319023 maglogo: N pubinfo: dt: Jun2009 vid: 89 iid: 6 pid: 10398 pub: Oxford University Press / USA artinfo: ui: 105351327 2010308113 10.2522/ptj.20090007 NLM19423642 105351327 ppf: 589 ppct: 12 formats: fmt: @attributes: type: P tig: atl: Evaluation of an item bank for a computerized adaptive test of activity in children with cerebral palsy. aug: au: Haley SM Fragala-Pinkham MA Dumas HM Ni P Gorton GE Watson K Montpetit K Bilodeau N Hambleton RK Tucker CA affil: Health and Disability Research Institute, School of Public Health, Boston University, Medical Campus, 580 Harrison Ave, 2nd Floor, Boston, MA 02218, USA. smhaley@bu.edu sug: subj: Cerebral Palsy Physiopathology Computerized Adaptive Testing In Adolescence Computerized Adaptive Testing In Infancy and Childhood Disability Evaluation In Adolescence Disability Evaluation In Infancy and Childhood Activities of Daily Living Adolescence Adult Child Child, Preschool Clinical Assessment Tools Concurrent Validity Convenience Sample Cross Sectional Studies Data Analysis Software Discriminant Validity Factor Analysis Funding Source Instrument Construction Pearson's Correlation Coefficient Psychometrics Sample Size Scales Validation Studies Human Adolescent: 13-18 years Adult: 19-44 years Child: 6-12 years Child, Preschool: 2-5 years ab: BACKGROUND: Contemporary clinical assessments of activity are needed across the age span for children with cerebral palsy (CP). Computerized adaptive testing (CAT) has the potential to efficiently administer items for children across wide age spans and functional levels. OBJECTIVE: The objective of this study was to examine the psychometric properties of a new item bank and simulated computerized adaptive test to assess activity level abilities in children with CP. DESIGN: This was a cross-sectional item calibration study. METHODS: The convenience sample consisted of 308 children and youth with CP, aged 2 to 20 years (X=10.7, SD=4.0), recruited from 4 pediatric hospitals. We collected parent-report data on an initial set of 45 activity items. Using an Item Response Theory (IRT) approach, we compared estimated scores from the activity item bank with concurrent instruments, examined discriminate validity, and developed computer simulations of a CAT algorithm with multiple stop rules to evaluate scale coverage, score agreement with CAT algorithms, and discriminant and concurrent validity. RESULTS: Confirmatory factor analysis supported scale unidimensionality, local item dependence, and invariance. Scores from the computer simulations of the prototype CATs with varying stop rules were consistent with scores from the full item bank (r=.93-.98). The activity summary scores discriminated across levels of upper-extremity and gross motor severity and were correlated with the Pediatric OUTCOMES: Data Collection Instrument (PODCI) physical function and sports subscale (r=.86), the Functional Independence Measure for Children (Wee-FIM) (r=.79), and the Pediatric Quality of Life Inventory-Cerebral Palsy version (r=.74). LIMITATIONS: The sample size was small for such IRT item banks and CAT development studies. Another limitation was oversampling of children with CP at higher functioning levels. CONCLUSIONS: The new activity item bank appears to have promise for use in a CAT application for the assessment of activity abilities in children with CP across a wide age range and different levels of motor severity. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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