Table 3.
Percent risk (PR) and percent agreement (PA) for each risk factor by task.
| Risk factor by task | 2D PR | 3D PR | PA | kappa | 95% CI | |
|---|---|---|---|---|---|---|
| Lower | Upper | |||||
| SLS trunk flexion | 17.6% | 4.4% | 86.8% | 0.354 | 0.054 | 0.654 |
| SLS trunk extension | 39.7% | 14.7% | 69.1% | 0.277 | 0.075 | 0.480 |
| SLS trunk lean | 11.8% | 20.6% | 85.3% | 0.465 | 0.192 | 0.739 |
| SLS knee valgus | 16.2% | 52.9% | 45.6%* | −0.047 | −0.216 | 0.123 |
| SLDL trunk flexion | 8.8% | 0.0%∧ | 100.0% | 0.000 | 0.000 | 0.000 |
| SLDL trunk extension | 42.6% | 52.9% | 69.1% | 0.388 | 0.174 | 0.601 |
| SLDL trunk lean | 5.9% | 17.6% | 88.2% | 0.452 | 0.153 | 0.750 |
| SLDL knee valgus | 10.3% | 57.4% | 44.1%* | −0.001 | −0.129 | 0.127 |
| DLVJ-load trunk flexion | 64.7% | 52.9% | 76.5% | 0.521 | 0.240 | 0.802 |
| DLVJ-load trunk extension | 0.0% | 0.0%∧ | 100.0% | 0.000 | 0.000 | 0.000 |
| DLVJ-load trunk lean | 5.9% | 2.9%∧ | 91.2% | −0.041 | −0.098 | 0.016 |
| DLVJ-load knee valgus | 38.2% | 17.6% | 64.7%* | 0.167 | −0.031 | 0.365 |
| DLVJ-land trunk flexion | 5.9% | 2.9% | 97.1% | 0.653 | 0.025 | 1.281 |
| DLVJ-land trunk extension | 61.8% | 38.2% | 76.5% | 0.554 | 0.312 | 0.796 |
| DLVJ-land trunk lean | 11.8% | 2.9%∧ | 85.3% | −0.049 | −0.129 | 0.031 |
| DLVJ-land knee valgus | 54.4% | 42.6% | 55.8%* | 0.129 | −0.045 | 0.303 |
Percent agreement (*) and percent risk values (∧) that were too low to obtain reliable kappa coefficients indicated with symbols.