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Table 3 Intra-tester reliability of the total “Motor Optimality Score” pair wise and between the three observers (A, B, C), comparing Intraclass Correlation Coefficient (ICC), 95% confidence intervals (95% CI), and within subject standard deviation (Sw)

From: Inter- and intra-observer reliability of the “Assessment of Motor Repertoire- 3 to 5 Months” based on video recordings of infants with Prader-Willi syndrome

Observers

ICC

95%CI

Sw

A

0.98

0.94–0.99

2.58

B

0.95

0.85–0.98

2.90

C

0.95

0.86–0.98

2.74

  1. N = 15 observations for A, B and C