Table 1. Mean (SD), ICC, and correlation for six active movements of neck using CROM device and digital goniometer
| | CROM | DG | Spearman’s ρ |
| Flexion | Mean (SD) | 50.3° (6.6°) | 51.0° (6.5°) | 0.94 |
| ICC | 0.98 | 0.99 |
| Extension | Mean (SD) | 57.8° (11.7°) | 58.9° (12.4°) | 0.97 |
| ICC | 0.99 | 0.99 |
| Left side-bending | Mean (SD) | 42.5° (8.3°) | 43.4° (8.4°) | 0.88 |
| ICC | 0.96 | 0.99 |
| Right side-bending | Mean (SD) | 42.5° (8.7°) | 42.3° (9.0°) | 0.96 |
| ICC | 0.96 | 0.99 |
| Left rotation | Mean (SD) | 64.3° (11.1°) | 65.2° (11.3°) | 0.96 |
| ICC | 0.98 | 0.99 |
| Right rotation | Mean (SD) | 66.6° (8.7°) | 68.1° (8.6°) | 0.98 |
| ICC | 0.97 | 0.99 |
CROM, cervical range-of-motion; DG, digital goniometer; SD, standard deviation; ICC, intraclass correlation coefficient.