Classroom Observation Protocol for Teaching Sports: Validity and Reliability
Description
This study aimed to test the validity criteria and reliability (internal consistency, intra- and interobserver reproducibility) of the measures obtained with the Classroom Observation Protocol.
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Descriptive statistics were used to describe the characteristics of the subjects. The Shapiro-Wilk test was applied to evaluate the normality of the data. Intra- and interobserver reliability was analyzed adopting the Intraclass Correlation Coefficient (ICC) based on a two-way random model, with mean measures for absolute agreement [ICC (2, k)] derived from the measurements for each COP item and for the scores generated. The ICC values were interpreted as follows: ≤ 0.50 (low reproducibility), > 0.50 to 0.75 (moderate reproducibility), > 0.75 to 0.90 (high reproducibility), and > 0.90 (excellent reproducibility) (Koo and Li, 2016). For concurrent criterion validity, the concordance index between the values obtained by the observers for each item and those of the standard was calculated. The scores generated by the observers and by the standard were analyzed using the nonparametric Wilcoxon test. In addition, Bland-Altman plots of the scores were analyzed by visual inspection. All analyses were performed using the IBM SPSS 23.0 software and the figures were plotted using GraphPad Prism 5.01. A level of significance of p < 0.05 was adopted.