Table 4.
Criterion validity of the iPhone compared to the CROM
| iPhone (Mean ± SD) | CROM (Mean ± SD) | ICC ± [95% CI] | Pearson’s r (p-value) | |
|---|---|---|---|---|
| Flexion |
56.0° ± 8.3° |
57.1° ± 8.4° |
0.76 [0.55-0.88] |
0.69 p < 0.001 |
| Extension |
82.2° ± 14.0° |
85.5° ± 12.3° |
0.58 [0.27-0.78] |
0.56 p = 0.002 |
| Right lateral flexion |
45.6° ± 7.8° |
44.7° ± 8.2° |
0.85 [0.70-0.93] |
0.80 p < 0.001 |
| Left lateral flexion |
47.5° ± 6.8° |
47.2° ± 7.0° |
0.70 [0.46-0.85] |
0.63 p < 0.001 |
| Right rotation |
72.4° ± 14.5° |
73.8° ± 8.6° |
0.55 [0.23-0.76] |
0.58 P < 0.01 |
| Left rotation | 75.4° ± 14.7° | 74.9° ± 8.6° | 0.43 [0.08-0.69] | 0.38 p = 0.04 |