Format

Send to

Choose Destination
See comment in PubMed Commons below
J Asthma. 2010 Apr;47(3):295-302. doi: 10.3109/02770900903426997.

Construction of the Pediatric Asthma Impact Scale (PAIS) for the Patient-Reported Outcomes Measurement Information System (PROMIS).

Author information

  • 1Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27510, USA. Karin Yeatts@unc.edu

Abstract

BACKGROUND:

Recently, the National Institutes of Health Roadmap for Medical Research initiative led a large-scale effort to develop the Patient-Reported Outcomes Measurement Information System (PROMIS). PROMIS's main goal was to develop a set of item banks and computerized adaptive tests for the clinical research community. Asthma, as the most common chronic childhood disease, was chosen for a disease-specific pediatric item bank.

OBJECTIVES:

The primary objective of this research is to present the details of the psychometric analyses of the asthma domain items.

METHODS:

Item response theory (IRT) analyses were conducted on a 34-asthma item bank. Test forms containing PROMIS Pediatric Asthma domain items were completed by 622 children ages 8 to 12. Items were subsequently evaluated for local dependence, scale dimensionality, and differential item functioning.

RESULTS:

A 17-item pool and an 8-item short form for the new PROMIS Pediatric Asthma Impact Scale (PAIS) were generated using IRT. The recommended 8-item short form contains the item set that provides the maximum test information at the mean (50) on the T-score metric. If more score precision is required, the complete 17-item pool is recommended and may be used in toto or as the basis of a computerized adaptive test (CAT). A shorter test form can also be created and scored on the same scale.

CONCLUSIONS:

The present study presents the PROMIS Pediatric Asthma Impact Scale (PAIS) developed with IRT, and provides the initial calibration data for the items.

[PubMed - indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Taylor & Francis Icon for PubMed Central
    Loading ...
    Write to the Help Desk