Reliability,Validity,and Responsiveness of a Modified International Knee Documentation Committee Subjective Knee Form (Pedi-IKDC) in Children With Knee Disorders

Abstract

Background: The International Knee Documentation Committee (IKDC) Subjective Knee Form is a knee-specific measure of symptoms, function, and sports activity. A modified IKDC Subjective Knee Form (pedi-IKDC) has been developed for use in children and adolescents. The purpose of this study was to determine the psychometric characteristics of the pedi-IKDC in children and adolescents with knee disorders.

Hypothesis: The pedi-IKDC is a reliable, valid, and responsive patient-administered outcome instrument in the pediatric population with knee disorders.

Study Design: Cohort study (diagnosis); Level of evidence, 2.

Methods: Test-retest reliability, content validity, criterion validity, construct validity, and responsiveness to change were determined for the pedi-IKDC in patients aged 10 to 18 years with a variety of knee disorders. Test-retest reliability was measured in a group of 72 patients with a stable knee disorder. Validity was measured in a group of 589 patients with the Child Health Questionnaire to determine criterion validity. Responsiveness was measured in a group of 98 patients undergoing a variety of knee surgical procedures.

Results: The overall pedi-IKDC had acceptable test-retest reliability (intraclass correlation coefficient, .91) and excellent internal consistency (Cronbach alpha, .91). The form also demonstrated acceptable floor (0%) and ceiling (6%) effects. There was acceptable criterion validity with significant (P < .01) correlation between the overall pedi-IKDC and 9 relevant domains of the Child Health Questionnaire. Construct validity was acceptable, with all 11 hypotheses demonstrating significance (P < .0001). Responsiveness to change was acceptable (effect size, 1.39; standardized response mean, 1.35).

Conclusion: The pedi-IKDC demonstrated overall acceptable psychometric performance for outcome assessment of children and adolescents with various disorders of the knee.

Keywords

validations International Knee Documentation Committee Subjective Knee Form outcome children

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References

Asmussen

Olson

Grant

Landgraf

Fagan

Weiss

. Use of the child health questionnaire in a sample of moderate and low-income inner-city children with asthma. Am J Respir Crit Care Med. 2000;162:1215-1221.

Cameron

Smidts

Hesketh

Wake

Northam

. Early detection of emotional and behavioral problems in children with diabetes: the validity of the Child Health Questionnaire as a screening instrument. Diabet Med. 2003;20:646-650.

Carr-Hill

. The measurement of patient satisfaction. J Public Health Med. 1992;14:236-249.

Cleary

McNeil

. Patient satisfaction as an indicator of quality care. Inquiry. 1988;25:25-36.

Crawford

Briggs

Rodkey

Steadman

. Reliability, validity, and responsiveness of the IKDC score for meniscus injuries of the knee. Arthroscopy. 2007;23:839-844.

Davies

Ware

. Involving consumers in quality of care assessment. Health Aff. 1988;7:33-48.

Doering

. Factors influencing inpatient satisfaction with care. QRB Qual Rev Bull. 1983;9:291-299.

Dunn

Vitale

. Pediatric orthopaedic outcome studies. Curr Opin Orthop. 2003;14:375-377.

Hall

Milburn

Epstein

. A causal model of health status and satisfaction with medical care. Med Care. 1993;31:84-94.

10.

Higgins

Taylor

Park

; International Knee Documentation Committee. Reliability and validity of the International Knee Documentation Committee (IKDC) Subjective Knee Form. Joint Bone Spine. 2007;74:594-599.

11.

Irrgang

Anderson

Boland

. Development and validation of the International Knee Documentation Committee Subjective Knee Form. Am J Sports Med. 2001;29:600-613.

12.

Irrgang

Anderson

Boland

; International Knee Documentation Committee. Responsiveness of the International Knee Documentation Committee Subjective Knee Form. Am J Sports Med. 2006;34:1567-1573.

13.

Iversen

Lee

Connell

Anderson

Andersen

Kocher

. Validity and comprehensibility of the International Knee Documentation Committee Subjective Knee Evaluation Form in children. Scand J Med Sci Sports. 2010;20(1):e87-e95.

14.

Kane

. Outcome measures. In: Kane

, ed. Understanding Health Care Outcomes Research. Gaithersburg, MD: Aspen Publishers; 1997:17-18.

15.

Kocher

Zurakowski

. Clinical epidemiology and biostatistics: a primer for orthopaedic surgeons. J Bone Joint Surg Am. 2004;86:607-620.

16.

Landgraf

Abetz

Ware

. The CHQ User’s Manual. 2nd printing. Boston, MA: HealthAct; 1999.

17.

Maciejewski

Kawiecki

Rockwood

. Satisfaction. In: Kane

, ed. Understanding Health Care Outcomes Research. Gaithersburg, MD: Aspen Publishers; 1997:67-89.

18.

Nixon

Maunsell

Desmeules

. Mutual concurrent validity of the Child Health Questionnaire and the Health Utilities Index: an exploratory analysis using survivors of childhood cancer. Int J Cancer Suppl. 1999;12:95-105.

19.

Raat

Landgraf

Bonsel

Gemke

Essink-Bot

. Reliability and validity of the Child Health Questionnaire-Child Form (CHQ-CF87) in a Dutch adolescent population. Qual Life Res. 2002;11:575-581.

20.

Ware

Snyder

Wright

Davies

. Defining and measuring patient satisfaction with medical care. Eval Program Plann. 1983;6:247-263.

21.

Waters

Salmon

Wake

Hesketh

Wright

. The Child Health Questionnaire in Australia: reliability, validity and population means. Aust N Z J Public Health. 2000;24:207-210.

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