Table 2 Test-retest stability between first, second and third completion of the YP-CORE showing mean differences, standard deviations and correlations between assessment times
Time | n | Mean difference [95% CI]a | SD | Pearson’s r | Spearman’s rho |
|---|---|---|---|---|---|
T2–T1 | 97 | -1.03 [-1.95, -0.12] | 4.61 | 0.82 [0.73, 0.88] | 0.76 [0.63, 0.85] |
T3–T2 | 60 | -0.24 [-1.64, 1.06] | 5.28 | 0.77 [0.61, 0.89] | 0.74 [0.55, 0.89] |
T3–T1 | 62 | -1.51 [-2.77, -0.23] | 5.13 | 0.77 [0.66, 0.86] | 0.79 [0.64, 0.88] |