Table 3.
Results of the medium sensitivity level of thresholds trained with data at 50 Hz with whole dataset DS-1. The results are divided by type of movement in order to analyze the movements that are more often misclassified.
| Non-Fall Movements | Samples | Pred Fall | Pred Non Fall | Acc (%) |
|---|---|---|---|---|
| While seated slowly drop sensor on the table | 99 | 5 | 94 | 94.9 |
| While seated quickly drop sensor on the table | 68 | 17 | 51 | 75.0 |
| While standing quickly drop sensor on the table | 73 | 33 | 40 | 54.8 |
| While standing slowly drop sensor on the table | 82 | 1 | 81 | 98.8 |
| Stumble | 67 | 0 | 67 | 100 |
| Sit on a lower chair, wait 10 s and get up | 63 | 0 | 63 | 100 |
| Left lateral fall with recovery | 67 | 1 | 66 | 98.5 |
| Walking and sitting on a chair | 65 | 0 | 65 | 100 |
| Lay, wait 10 s, stand, wait 10 s | 70 | 2 | 68 | 97.1 |
| Forward Fall with recovery | 67 | 0 | 67 | 100 |
| Backward fall with recovery | 67 | 0 | 67 | 100 |
| Catch an object from the floor while walking | 67 | 0 | 67 | 100 |
| Walk a few meters | 68 | 0 | 67 | 100 |
| Cough and sneeze | 67 | 0 | 67 | 100 |
| Sit, wait 10 s, stand, wait 10 s | 70 | 0 | 70 | 100 |
| Run a few meters | 67 | 1 | 66 | 98.5 |
| Right lateral fall with recovery | 66 | 0 | 66 | 100 |
| While seated slightly lift the body | 31 | 0 | 31 | 100 |
| Sitting on a chair | 34 | 0 | 34 | 100 |
| Laying on a bed | 31 | 0 | 31 | 100 |
| Bend and pick an object from the floor | 18 | 0 | 18 | 100 |
| Get up from laying and stand | 59 | 0 | 59 | 100 |
| Get up from laying and sit | 30 | 0 | 30 | 100 |
| Walk | 3 | 0 | 3 | 100 |
| Total | 1399 | 60 | 1339 | 95.7 |
| Fall Movements | ||||
| Sited on a chair, stand up, walk and fall | 64 | 56 | 8 | 87.5 |
| Backward fall ending lying | 70 | 70 | 0 | 100 |
| Forward fall with rotation, ending in lateral left position | 67 | 65 | 2 | 97.0 |
| Backward fall ending sitting | 67 | 61 | 6 | 91.0 |
| Forward fall with rotation, ending in lateral right position | 67 | 63 | 4 | 94.0 |
| Walk few meters and then right lateral fall | 67 | 67 | 0 | 100 |
| Lateral fall to the left ending lying flat | 67 | 65 | 2 | 97.0 |
| Lateral fall to the right ending lying flat | 67 | 64 | 3 | 95.6 |
| Backward fall ending in lateral position | 66 | 66 | 0 | 100 |
| Walk few meters and fall backwards | 66 | 66 | 0 | 100 |
| Walk few meters and left lateral falls | 67 | 62 | 5 | 92.5 |
| Forward fall on the knees | 70 | 70 | 0 | 100 |
| Forward fall ending lying flat | 67 | 62 | 5 | 95.5 |
| Forward fall with forward arm protection | 70 | 70 | 0 | 100 |
| Walk few meters and fall forward | 67 | 63 | 4 | 94.0 |
| Total | 1009 | 970 | 39 | 96.1 |