Table 3.
Static orientation and movement identification accuracy levels based on sensitivity and PPV for varying accelerometer locations. White: unacceptable, light grey: moderate, dark grey: high.
| Accuracy: | Waist-thigh | Thigh-ankle | Waist | Thigh | Ankle |
|---|---|---|---|---|---|
| Standing | A | A | |||
| Sitting | B | ||||
| Lying | |||||
| Walking/Fidgeting | |||||
| Jogging | |||||
| Transitions | C | A | B | A |
Note: A:A standing cannot be separated from sitting; B: lying cannot be separated from sitting; and C: transitions between sitting with legs straight cannot be separated from lying.