Table 1.
Interobserver reliability of data acquisition using manual and digital methods
| RMS error | SD | ICC | CI | |||||
|---|---|---|---|---|---|---|---|---|
| RAI | PER | RAI | PER | RAI | PER | RAI | PER | |
| Manual | ||||||||
| Trial 1 | 5.2° | 5.6° | 5.0° | 5.0° | 0.96 | 0.95 | 0.88, 0.98 | 0.86, 0.98 |
| Trial 2 | 5.2° | 6.2° | 5.2° | 5.0° | 0.97 | 0.95 | 0.90, 0.99 | 0.85, 0.98 |
| Trial 3 | 4.5° | 5.4° | 4.5° | 4.7° | 0.96 | 0.94 | 0.89, 0.99 | 0.83, 0.98 |
| Digital | ||||||||
| Trial 1 | 3.0° | 3.0° | 2.5° | 2.9° | 0.99 | 0.98 | 0.97, 0.99 | 0.96, 0.99 |
| Trial 2 | 3.2° | 3.0° | 2.8° | 3.0° | 0.99 | 0.98 | 0.98, 0.99 | 0.94, 0.99 |
| Trial 3 | 3.0° | 3.2° | 2.8° | 3.2° | 0.99 | 0.98 | 0.96, 0.99 | 0.94, 0.99 |
Axial vertebrae rotations were assessed in both methods by the Raimondi (RAI) and Perdriolle (PER) techniques in three trials each. The root mean square (RMS) error, standard deviation (SD), intraclass correlation coefficient (ICC) and 95% confidence interval (CI) were calculated for each method and technique