|
Variables
|
Median (IQR)
|
Agreement
|
|---|
| |
Week 1
|
Week 2
|
Median difference (%)
|
ICC
|
LoA % (95% LoA)
|
r
|
|---|
|
Macro characteristics
|
|
Total daily step count
|
7825 (6428)
|
7191 (5920)
|
−634 (−9%)
|
0.917**
|
0.9 (3138, −4470)
|
0.892**
|
|
Mean walking bout length (s)
|
17.12 (2.56)
|
16.3 (6.2)
|
−0.82 (−5%)
|
0.919**
|
0.4 (3.036, −3.565)
|
0.894**
|
|
Total number of daily walking bouts
|
535 (288)
|
462 (237)
|
−73 (16)
|
0.867**
|
2 (226,-272)
|
0.823**
|
|
Alpha (unit less)
|
1.614 (0.535)
|
1.615 (0.068)
|
0.001 (0.06)
|
0.948**
|
0.1 (0.05, −0.046)
|
0.853**
|
|
Variability (s)
|
0.840 (0.057)
|
0.842 (0.105)
|
0.002 (0.2%)
|
0.887**
|
0.2 (0.08, −0.094)
|
0.801**
|
|
Micro characteristics
|
|
Mean
|
|
Step velocity (m/s)
|
1.05 (0.165)
|
1.07 (0.152)
|
0.02 (1.9)
|
0.958**
|
0.17 (0.087, −0.093)
|
0.914**
|
|
Step length (m)
|
0.610 (0.085)
|
0.610 (0.085)
|
0 (0)
|
0.969**
|
1.2 (0.034, −0.038)
|
0.940**
|
|
Step time (s)
|
0.613 (0.353)
|
0.622 (0.38)
|
0.009 (1)
|
0.951**
|
0.07(0.022, −0.018)
|
0.889**
|
|
Swing time (s)
|
0.474 (0.032)
|
0.475 (0.030)
|
0.001 (0.2)
|
0.962**
|
0.07 (0.02,-0.013)
|
0.925**
|
|
Stance time (s)
|
0.764 (0.040)
|
0.766 (0.047)
|
0.002 (0.2)
|
0.942**
|
0.1 (0.026, −0.026
|
0.863**
|
|
Variability
|
|
Step velocity (m/s)
|
0.385 (0.048)
|
0.383 (0.042)
|
−0.002 (−0.5)
|
0.905**
|
0.2 (0.04, −0.0345)
|
0.914**
|
|
Step length (m)
|
0.162 (0.021)
|
0.159 (0.017)
|
0.003 (−2%)
|
0.944**
|
0.12 (0.034, −0.0384)
|
0.940**
|
|
Step time (s)
|
0.183 (0.041)
|
0.181 (0.044)
|
−0.002 (−1)
|
0.982**
|
0.17 (0.018, −0.0149)
|
0.889**
|
|
Swing time (s)
|
0.152 (0.040)
|
0.150 (0.039)
|
−0.002 (−1.3)
|
0.983**
|
0.15 (0.0119,-0.0113)
|
0.925**
|
|
Stance time (s)
|
0.193 (0.042)
|
0.193 (0.044)
|
0 (0)
|
0.982**
|
0.2 (0.0189, −0.0169)
|
0.863**
|
|
Asymmetry
|
|
Step length (m)
|
0.082 (0.019)
|
0.090 (0.021)
|
0.008 (9%)
|
0.668**
|
0.7 (0.0337, −0.0245)
|
0.599**
|
|
Step time (s)
|
0.123 (0.037)
|
0.120 (0.044)
|
−0.003 (−2.5)
|
0.875**
|
0.6 (0.0357, −0.0344)
|
0.788**
|
|
Swing time (s)
|
0.109 (0.040)
|
0.101 (0.049)
|
−0.008 (−8%)
|
0.925**
|
0.5 (0.026, −0.0261)
|
0.850**
|
|
Stance time (s)
|
0.123 (0.04)
|
0.109 (0.030)
|
−0.01 (−13%)
|
0.878**
|
0.6 (0.0357, −0.0398)
|
0.742**
|
-
IQR Interquartile range, s seconds, ICC Intraclass correlation coefficient, LoA% limits of agreement as a percentage of the mean of the two systems, r Spearman’s rank correlation coefficient
- **p ≤ 0.01 *p ≤ 0.05
