Table 4. Intra-observer disagreement.
| Observer 1 | Observer 2 | Observer 3 | |
| Upper level of the brain | |||
| RP (95% CI) | |||
| Q1 | −0.01 (−0.11 to 0.09) | 0.15 (0.00 to 0.29) | 0.12 (0.00 to 0.23) |
| Q2 | 0.00 (−0.15 to 0.16) | 0.14 (−0.02 to 0.30) | 0.04 (−0.09 to 0.18) |
| Q3 | 0.13 (0.00 to 0.26) | 0.03 (−0.10 to 0.15) | 0.19 (0.03 to 0.35) |
| Q4 | 0.02 (−0.09 to 0.14) | 0.15 (0.01 to 0.28) | 0.25 (0.11 to 0.40) |
| Q5 | −0.03 (−0.17 to 0.11) | 0.16 (0.03 to 0.28) | 0.09 (0.01 to 0.17) |
| Q6 | 0.10 (−0.01 to 0.20) | 0.16 (0.02 to 0.30) | 0.13 (0.00 to 0.26) |
| RC (95% CI) | |||
| Q1 | 0.04 (−0.11 to 0.20) | 0.01 (−0.09 to 0.12) | −0.02 (−0.21 to 0.18) |
| Q2 | 0.01 (−0.21 to 0.23) | −0.06 (−0.19 to 0.08) | −0.05 (−0.27 to 0.16) |
| Q3 | −0.06 (−0.21 to 0.08) | −0.03 (−0.14 to 0.09) | 0.10 (−0.12 to 0.31) |
| Q4 | −0.07 (−0.19 to 0.04) | −0.03 (−0.20 to 0.14) | 0.06 (−0.18 to 0.30) |
| Q5 | 0.14 (−0.02 to 0.29) | 0.00 (−0.19 to 0.19) | −0.07 (−0.21 to 0.08) |
| Q6 | −0.10 (−0.28 to 0.07) | 0.10 (−0.13 to 0.34) | −0.15 (−0.35 to 0.05) |
| RV (95% CI) | |||
| Q1 | 0.00 (0.00 to 0.00) | 0.01 (0.00 to 0.02) | 0.00 (0.00 to 0.01) |
| Q2 | 0.02 (0.00 to 0.05) | 0.02 (0.00 to 0.05) | 0.01 (0.00 to 0.02) |
| Q3 | 0.00 (0.00 to 0.01) | 0.00 (0.00 to 0.01) | 0.01 (0.00 to 0.04) |
| Q4 | 0.00 (0.00 to 0.01) | 0.00 (0.00 to 0.01) | 0.01 (0.00 to 0.04) |
| Q5 | 0.01 (0.00 to 0.02) | 0.00 (0.00 to 0.01) | 0.00 (0.00 to 0.00) |
| Q6 | 0.00 (0.00 to 0.00) | 0.01 (0.00 to 0.03) | 0.00 (0.00 to 0.01) |
| Lower level of the brain | |||
| RP (95% CI) | |||
| Q1 | −0.09 (−0.23 to 0.05) | 0.16 (−0.01 to 0.32) | 0.09 (−0.02 to 0.19) |
| Q3 | −0.03 (−0.20 to 0.14) | 0.14 (0.01 to 0.28) | 0.19 (0.01 to 0.38) |
| Q4 | −0.20 (−0.34 to −0.05) | 0.25 (0.13 to 0.38) | 0.20 (0.06 to 0.34) |
| Q5 | 0.03 (−0.18 to 0.24) | 0.17 (0.02 to 0.33) | −0.03 (−0.20 to 0.14) |
| Q6 | −0.01 (−0.13 to 0.12) | 0.18 (0.03 to 0.32) | 0.27 (0.12 to 0.42) |
| RC (95% CI) | |||
| Q1 | 0.18 (−0.01 to 0.37) | 0.03 (−0.10 to 0.15) | 0.01 (−0.10 to 0.11) |
| Q3 | 0.00 (0.00 to 0.00) | 0.02 (−0.12 to 0.15) | 0.17 (−0.05 to 0.38) |
| Q4 | −0.07 (−0.27 to 0.12) | −0.08 (−0.24 to 0.08) | 0.17 (0.00 to 0.34) |
| Q5 | −0.02 (−0.20 to 0.17) | −0.12 (−0.32 to 0.08) | 0.00 (0.00 to 0.00) |
| Q6 | −0.06 (−0.19 to 0.08) | −0.09 (−0.31 to 0.14) | 0.03 (−0.13 to 0.19) |
| RV (95% CI) | |||
| Q1 | 0.01 (0.00 to 0.03) | 0.02 (0.00 to 0.06) | 0.00 (0.00 to 0.01) |
| Q3 | 0.02 (0.00 to 0.05) | 0.00 (0.00 to 0.02) | 0.02 (0.00 to 0.05) |
| Q4 | 0.00 (0.00 to 0.00) | 0.00 (0.00 to 0.00) | 0.00 (0.00 to 0.00) |
| Q5 | 0.08 (0.00 to 0.17) | 0.01 (0.00 to 0.03) | 0.02 (0.00 to 0.05) |
| Q6 | 0.00 (0.00 to 0.01) | 0.03 (0.00 to 0.06) | 0.00 (0.00 to 0.00) |
The table presents the measures of intra-observer disagreement in the different questions (Table 2) in the upper and lower levels of the brain. Values of systematic disagreement in position (RP) and in concentration (RC), and the measure of additional individual variability in assessments (RV) are given, together with the 95% confidence intervals (CI) of the measures.