Table 1 Inter- and intra-observer agreements (ICC [2, 1] and ICC [1], respectively) for the measurement of the A, B, D, and E distances
First measurement | Second measurement | Observer 1 | Observer 2 | Observer 3 | Observer 4 | |||
|---|---|---|---|---|---|---|---|---|
Distance A | ICC (2,1) | 0.96 | 0.99 | ICC (1,1) | 0.98 | 0.93 | 0.99 | 0.98 |
Lower bound | 0.94 | 0.98 | Lower bound | 0.97 | 0.88 | 0.98 | 0.97 | |
Upper bound | 0.98 | 0.99 | Upper bound | 0.99 | 0.96 | 0.99 | 0.98 | |
Distance B | ICC (2,1) | 0.96 | 0.96 | ICC (1,1) | 0.98 | 0.96 | 0.99 | 0.98 |
Lower bound | 0.93 | 0.92 | Lower bound | 0.96 | 0.93 | 0.97 | 0.97 | |
Upper bound | 0.97 | 0.98 | Upper bound | 0.99 | 0.98 | 0.99 | 0.99 | |
Distance D | ICC (2,1) | 0.98 | 0.91 | ICC (1,1) | 0.99 | 0.97 | 1 | 0.84 |
Lower bound | 0.96 | 0.87 | Lower bound | 0.99 | 0.95 | 0.99 | 0.73 | |
Upper bound | 0.99 | 0.94 | Upper bound | 1 | 0.98 | 1 | 0.90 | |
Distance E | ICC (2,1) | 0.44 | 0.57 | ICC (1,1) | 0.72 | 0.80 | 0.77 | 0.74 |
Lower bound | 0.21 | 0.34 | Lower bound | 0.56 | 0.68 | 0.63 | 0.59 | |
Upper bound | 0.64 | 0.73 | Upper bound | 0.83 | 0.88 | 0.86 | 0.84 |