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. 2013 Apr;28(4):473–479. doi: 10.1016/j.clinbiomech.2013.02.009

Table 1.

Group mean step counts for each measure.

Measure Control group
Mean (SD)
RA patients
Mean (SD)
Gold standard 221.75 (19.21) 159.50 (38.65)
Step-N-Tune 213.75 (57.42) 86.27 (77.57)
A4L 247.17 (21.68) 177.27 (58.04)
IDEEA 184.67 (61.49) 72.92 (69.65)

Values indicate group average for each measure. Gold standard: mean of 3 counts from half speed video replay; A4L: Activ4Life; SD: standard deviation.