RELIABILITY & VALIDITY PRPP-ASSESSMENT IN CHILDREN 173 7 Table 6 Overview of the inter-rater reliability statistics ICCAgreement ICCconsistency Mean (SD) Median (range) Mean Difference* (SD) Difference median (range) SD Variance component Children** SD Variance component Raters** Stage 1 Mastery Score 0.646 0.734 60 (27) 64 (0-100) 4 (26) 0 (-57 – 60) 22 9 Stage 2 SumScore 0.316 0.372 86 (11) 88 (45-100) 2 (15) 1 (-45 – 55) 6 4 Perceive Quadrant 0.325 0.333 90 (13) 100 (52-100) 1 (16) 0 (-48 – 33) 7 2 Recall Quadrant 0.225 0.286 91 (11) 93 (44-100) 0 (16) 0 (-44 – 56) 5 5 Plan Quadrant 0.269 0.317 79 (18) 85 (33-100) 5 (24) 4 (-59 – 67) 10 7 Perform Quadrant 0.220 0.253 82 (13) 83 (33-100) 3 (19) 2 (-50 – 67) 6 5 *: The difference was calculated for each activity with the score of the first rater as a ‘reference value’. Based on those difference per activity, the mean difference (and SD) was calculated. **: Standarddeviation was calculated by rooting the variance components which were used to calculate the ICC.
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