Sonja Mensch

85 Reliability of Movakic to noted events that might have influenced reliability during all of the five 3-month intervals, such as surgery, sickness or increasing contractures. Test-retest reliability for the remaining 50 children in terms of agreement (ICC) and mean distance of Movakic scores is presented in Table 4. Table 4. Test-retest reliability (N=50) Baseline – 3 months ICC (95%CI) Mean distance of Movakic scores (SD) Total score .95** (.92-.97) 6.8 (6.4) Group of motor ability Maintaining position .98** (.97-.99) Activities .96** (.94-.98) Changing body position .91** (.82-.95) Moving around .72** (.27-.90) ICC = intraclass correlation coefficient 95%CI = 95% Confidence Interval SD = Standard Deviation *p <0.05, **p<0.01 Figure 2 shows the Bland & Altman plot of all individual differences between Movakic scores at T0 and T1 scores against mean Movakic scores. The score differences varied between -25 and 24 points (SD = 9.2). Seventy-four percent of the differences were within one standard deviation (dotted lines). Inter-rater reliability Movakicwas completedat baselineby two therapists for 19 children. Inter-rater reliability in terms of ICC and mean distance of Movakic total scores is presented in Table 5. Figure 3 shows the Bland & Altman plot of all individual differences between Movakic scores of the two raters against mean Movakic scores. The score distances varied between -21 and 29 points (SD=11.8). Seventy-nine percent of the distances were within the standard deviation (dotted lines in the figure).