Table 5. Positive and negative predictive value for different OWS on clinical data.
| Results on Clinical Data Per Observation | ||||||||
| Positive Predictive Value (PPV) | Negative Predictive Value (NPV) | |||||||
| OWS | AD38 | AU17 | Either | Both | AD38 | AU17 | Either | Both |
| 2 | 38.10% | 61.54% | 39.11% | 85.71% | 70.03% | 67.92% | 71.30% | 67.28% |
| 5 | 35.71% | 54.55% | 35.97% | 77.78% | 69.52% | 68.90% | 70.65% | 68.47% |
| 10 | 33.82% | 53.85% | 33.33% | 83.33% | 67.57% | 69.57% | 66.67% | 69.70% |
| 15 | 32.56% | 50.00% | 31.25% | 80.00% | 65.00% | 69.81% | 60.00% | 70.69% |
| 20 | 32.26% | 50.00% | 30.30% | 66.67% | 63.64% | 70.59% | 55.56% | 72.22% |
| 30 | 31.25% | 40.00% | 27.78% | 66.67% | 60.00% | 68.75% | 33.33% | 72.22% |
| Results on Clinical Data Per Video | ||||||||
| Positive Predictive Value (PPV) | Negative Predictive Value (NPV) | |||||||
| OWS | AD38 | AU17 | Either | Both | AD38 | AU17 | Either | Both |
| 2 | 37.50% | - | 44.44% | - | 69.23% | 66.67% | 75.00% | 66.67% |
| 5 | 30.77% | 100.00% | 33.33% | - | 62.50% | 70.00% | 66.67% | 66.67% |
| 10 | 35.71% | 50.00% | 33.33% | 100.00% | 71.43% | 68.42% | 66.67% | 70.00% |
| 15 | 33.33% | 50.00% | 31.25% | 100.00% | 66.67% | 70.59% | 60.00% | 73.68% |
| 20 | 31.25% | 40.00% | 27.78% | 66.67% | 60.00% | 68.75% | 33.33% | 72.22% |
| 30 | 31.25% | 40.00% | 27.78% | 66.67% | 60.00% | 68.75% | 33.33% | 72.22% |
The criteria for determining pain is the presence of chin raiser (AU17), nostril dilator (AD38), either, or both. Missing values denoted as “–” indicate no observation with required criteria was present.