Original scientific paper

Establishing Some Measures of Absolute and Relative Reliability of a Motor Test

Ivan Šerbetar ; Faculty of Teacher EducationUniversity of Zagreb

Abstract

Relative and absolute reliability are discussed in this paper on the bases of some empirical motor data. Relative reliability was assessed via the calculation of intraclass correlation coefficients (ICC; Shrout & Fleiss, 1979; Nunnally & Berstein, 1994). Absolute reliability was assessed by calculating standard error of measurement (SEM), and additionally by calculating the smallest detectable change (SDC; de Veet et al., 2006a, b), a relatively new measure which originates from clinical disciplines but has an ever-growing use in other areas. Bland-Altman method (1986, 1995) for determining the limits of agreement and bias between two measurements, was also used. ICC coefficients were high with narrow limits of confidence but ICC masked some differences in trials revealed by SEM and Bland-Altman technique. As stated in Hopkins (2000), and Atkinson and Nevill (1998), more than one measure of reliability should be provided in reliability studies.

Keywords

Bland-Altman limits of agreement; intraclass correlation; reliability of the measurement, smallest detectable change (SDC); standard error of the measurement (SEM)

Hrčak ID:

137678

URI

https://hrcak.srce.hr/137678

Publication date:

25.2.2015.

Article data in other languages: croatian

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