Table 5. Accuracy and precision of temporal gait parameters measured by BioStampRC.
| Test | Gait parameter | Absolute accuracy | Relative accuracy | Precision | |||||
|---|---|---|---|---|---|---|---|---|---|
| Meanerror | 95% CI | Mean error | 5%<N | 10%<N | 15%<N | ABS | REL | ||
| Over-ground comfortable walking | Stride time diff (ms) | 8.9 | 5.2–12.6 | 0.6% | 0 | 0 | 0 | 12.0 | 0.9% |
| Swing time diff (ms) | 20.6 | 17.3–23.9 | 4.4% | 18 | 5 | 1 | 17.8 | 3.6% | |
| Step time diff (ms) | 7.1 | 4.4–9.7 | 1.2% | 1 | 0 | 0 | 9.1 | 1.5% | |
| T25W | Stride time diff (ms) | 8.3 | 6.0–10.5 | 0.8% | 0 | 0 | 0 | 11.8 | 1.3% |
| Swing time diff (ms) | 21 | 17.8–24.2 | 5.0% | 19 | 5 | 1 | 16.9 | 4.1% | |
| Step time diff (ms) | 7.4 | 5.7–9.2 | 1.4% | 1 | 0 | 0 | 9.4 | 1.4% | |
| TUG | Stride time diff (ms) | 12.6 | 9.7–15.5 | 1.2% | 1 | 0 | 0 | 14.9 | 1.2% |
| Swing time diff (ms) | 26.9 | 23.2–30.6 | 6.5% | 32 | 18 | 7 | 23.2 | 5.0% | |
| Step time diff (ms) | 14.1 | 11.4–16.8 | 2.6% | 7 | 0 | 0 | 12.5 | 2.1% | |
| 6MW_Comfortable | Stride time diff (ms) | 0.7 | 0.3–1.1 | 0.0% | 0 | 0 | 0 | 1.5 | 0.1% |
| Swing time diff (ms) | 29.8 | 24.7–35.0 | 6.3% | 31 | 9 | 1 | 19.0 | 3.9% | |
| Step time diff (ms) | 0.4 | 0.2–0.6 | 0.0% | 0 | 0 | 0 | 0.6 | 0.1% | |
| 6MW_Slow | Stride time diff (ms) | 1.6 | 0.4–2.8 | 0.0% | 0 | 0 | 0 | 4.5 | 0.2% |
| Swing time diff (ms) | 27.5 | 22.3–32.8 | 5.3% | 24 | 6 | 1 | 19.7 | 3.7% | |
| Step time diff (ms) | 0.9 | 0.4–1.3 | 0.0% | 0 | 0 | 0 | 1.8 | 0.2% | |
| 6MW_Fast | Stride time diff (ms) | 1.2 | 0.4–2.1 | 0.1% | 0 | 0 | 0 | 3.2 | 0.2% |
| Swing time diff (ms) | 29.7 | 24.3–35.0 | 6.1% | 30 | 9 | 0 | 20.0 | 3.8% | |
| Step time diff (ms) | 0.6 | 0.3–0.9 | 0.1% | 0 | 0 | 0 | 1.1 | 0.1% | |
Note: Total N = 60 for each test, ABS = absolute, REL = relative