Difference between two measurements by a single observer for intracranial ventricular measurements
| Measurement (mm) | Mean (SD) of average between measurements | Mean difference | Variability | Intraclass correlation coefficient |
| Right AHW | 1.52 (0.81) | 0.01 | 0.21 | 0.97 |
| Left AHW | 1.70 (0.98) | 0.01 | 0.25 | 0.97 |
| Right TOD | 16.5 (3.9) | 0.21 | 0.99 | 0.97 |
| Left TOD | 18.1 (4.3) | 0.19 | 1.20 | 0.96 |
| Third ventricle width | 1.24 (0.32) | 0.0 | 0.16 | 0.89 |
| Fourth ventricle width | 5.49 (0.91) | 0.03 | 0.32 | 0.94 |
| Fourth ventricle width | 5.19 (0.89) | 0.02 | 0.60 | 0.80 |
The average between measurements refers to the average of the mean of both repeated measurements.
The mean difference refers to the average difference of the repeated measurements.
Variability refers to the standard deviation of the differences between repeated measurements.
AHW, anterior horn width; TOD, thalamo-occipital distance.