Quality of Life Research

, Volume 23, Issue 1, pp 349–361

PROMIS® Parent Proxy Report Scales for children ages 5–7 years: an item response theory analysis of differential item functioning across age groups

Authors

    • Department of Pediatrics, College of MedicineTexas A&M University
    • Department of Landscape Architecture and Urban Planning, College of ArchitectureTexas A&M University
  • David Thissen
    • Department of PsychologyUniversity of North Carolina at Chapel Hill
  • Brian D. Stucky
    • RAND Corporation
  • Yang Liu
    • Department of PsychologyUniversity of North Carolina at Chapel Hill
  • Brooke Magnus
    • Department of PsychologyUniversity of North Carolina at Chapel Hill
  • Hally Quinn
    • Department of PsychologyUniversity of North Carolina at Chapel Hill
  • Debra E. Irwin
    • Department of EpidemiologyUniversity of North Carolina at Chapel Hill
  • Esi Morgan DeWitt
    • Division of Rheumatology, Department of PediatricsCincinnati Children’s Hospital Medical Center
  • Jin-Shei Lai
    • Department of Medical Social SciencesNorthwestern University Feinberg School of Medicine
  • Dagmar Amtmann
    • Department of Rehabilitation MedicineUniversity of Washington
  • Heather E. Gross
    • Division of General Medicine and Clinical Epidemiology, Cecil G. Sheps Center for Health Services ResearchUniversity of North Carolina at Chapel Hill
  • Darren A. DeWalt
    • Division of General Medicine and Clinical Epidemiology, Cecil G. Sheps Center for Health Services ResearchUniversity of North Carolina at Chapel Hill
Article

DOI: 10.1007/s11136-013-0439-0

Cite this article as:
Varni, J.W., Thissen, D., Stucky, B.D. et al. Qual Life Res (2014) 23: 349. doi:10.1007/s11136-013-0439-0

Abstract

Objective

The objective of the present study is to describe the extension of the National Institutes of Health Patient-Reported Outcomes Measurement Information System (PROMIS®) pediatric parent proxy-report item banks for parents of children ages 5–7 years, and to investigate differential item functioning (DIF) between the data obtained from parents of 5–7-year-old children with the data obtained from parents of 8–17 year-old children in the original construction of the scales.

Methods

Item response theory (IRT) analyses of DIF were conducted comparing data from the 5–7 age group with data from the established scales for ages 8–17 across 5 generic health domains (physical functioning, pain, fatigue, emotional health, and social health) and asthma.

Results

IRT DIF analyses revealed that the majority of the items functioned similarly with responses from parents of younger and older children. A small number of items were removed from the item bank for younger children, and a few items that exhibited statistical DIF were retained in the pools with the caveat that they should not be used in studies that involve comparisons of younger children with older children.

Conclusions

The study confirms that most of the items in the PROMIS parent proxy-report item banks can be used with parents of children ages 5–7. It is anticipated that these new scales will have application for younger pediatric populations when pediatric self-report is not feasible.

Keywords

PROMISParent proxy-reportItem response theory

Abbreviations

PROMIS

Patient-Reported Outcomes Measurement Information System

FDA

Food and drug administration

HRQOL

Health-related quality of life

NIH

National institute of health

Copyright information

© Springer Science+Business Media Dordrecht 2013