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. Author manuscript; available in PMC: 2011 May 5.
Published in final edited form as: Gait Posture. 2005 Nov 15;24(3):295–301. doi: 10.1016/j.gaitpost.2005.10.004

Table 3.

Summary of Pearson’s product moment correlation to assess relationships between variables of interest in subjects with and without DM (r1 and r2, respectively)

Variables of interest DM, r1 Control, r2 |Z|
Peak passive DF Gait DF −0.150 −0.007 0.270
Peak passive DF KF Gait DF 0.145 0.158 0.025
Passive stiffness Gait stiffness 0.075 0.472 0.843
Passive stiffnessKF Gait stiffness −0.017 0.14 0.295
Peak passive DF Forefoot PP −0.512 0.457 1.981
Peak passive DFKF Forefoot PP 0.065 −0.46 1.052
Gait DF Forefoot PP 0.134 0.317 0.362
Passive stiffness Forefoot PP −0.501 0.433 1.897
Passive stiffnessKF Forefoot PP −0.273 −0.13 0.279
Gait stiffness Forefoot PP 0.020 0.588 1.225
Stride length Forefoot PP 0.708 0.656 0.182
AROM Stride length 0.732 −0.403 2.577
Gait stiffness Stride length 0.769 −0.396 2.688

Superscript ‘KF’ indicates knee flexed condition; PP indicates peak pressure. The test |Z| ≥ z0.025 has a critical value of 2.57 and assesses equality of the correlations (Ho: ρ1 = ρ2).