Intra-Rater Test-Retest Reliability of a Modified Child Functioning Module, Self-Report Version

Kwok Ng, Piritta Asunta, Niko Leppä and Pauli Rintala
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Kwok Ng: School of Educational Sciences and Psychology, University of Eastern Finland, 80101 Joensuu, Finland
Piritta Asunta: LIKES Physical Activity for Health Research Centre, 40700 Jyväskylä, Finland
Niko Leppä: Spesia Vocational College, Keskussairaalantie 21, 40620 Jyväskylä, Finland
Pauli Rintala: Faculty of Sport and Health Sciences, University of Jyväskylä, 40014 Jyväskylä, Finland

IJERPH, 2020, vol. 17, issue 19, 1-11

Abstract: Determining disability prevalence is a growing area for population statistics, especially among young adolescents. The Washington Group on Disability Statistics is one source of reporting disabilities through functional difficulties. Yet, young adolescents self-reporting through this measure is in its infancy. The purpose of this study was to carry out an intra-rater test-retest reliability study on a modified set of items for self-reporting functional difficulties. Young adolescents ( N = 74; boys = 64%; age M = 13.7, SD = 1.8) with special educational needs in Finland completed a self-reported version of the Child Functioning Module in a supervised classroom. The second administration took place two weeks later. Intraclass correlation coefficient (ICC) and Kappa ( k ) statistics were used to test the reliability of the items, and interpretation took place through Landis and Koch, and Cohen, respectively. The majority of items had substantial or moderate agreement, although there was only fair agreement for self-care (ICC = 0.59), concentration (ICC = 0.50), and routine changes (ICC = 0.54). Kappa statistics of behavior control were interpreted to be large ( k = 0.65), and seeing ( k = 0.49), walking ( k = 0.49), and speaking ( k = 0.49) difficulties were moderate. The majority of the items in the self-reported version of the Child Functioning Module can be used in a scale format, although some caution may be required on items of self-care and concentration when used as a dichotomous variable.

Keywords: disability statistics; kappa; intraclass correlation coefficient; young adolescents; functional difficulties; special education; survey; health behavior (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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