Table 3 Proportions of measurements within +/-3 mm and +/-5 mm from 0 and chi-square analysis of variations between observers
Image and Direction of Displacement | % Measurements within +/- 3 mm | P value | % Measurements within +/- 5 mm | P value |
|---|---|---|---|---|
AP LR | 73.8 | .26 | 92.0 | .97 |
AP SI | 81.3 | .0004 | 95.3 | .0049 |
Lat AP | 66.8 | .002 | 87.6 | .0003 |
Lat SI | 78.2 | < .0001 | 94.0 | .0005 |