# Test-Retest Reliability of a 6 DoF Marker Set for Gait Analysis in Cerebral Palsy Children
## 2 Materials and Methods
### Statistical Methods
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Kinematic** & \multirow{2}{*}{**ICC**} & \multirow{2}{*}{**ICC**} & \multirow{2}{*}{**ICC**} & \multirow{2}{*}{**ICC**} & \multirow{2}{*}{**95\% CI**} & \multirow{2}{*}{**Mean**} & \multirow{2}{*}{**Mean Diff**} & \multirow{2}{*}{**Mean Diff**} & \multirow{2}{*}{**Mean Diff**} & \multirow{2}{*}{**95\% CI**} & \multirow{2}{*}{**SD\_MF**} & \multirow{2}{*}{**95\% LOA**} & \multirow{2}{*}{**SEM**} \\ \cline{5-8}
**Parameter** & & & & & & & & \\ \hline \hline \multicolumn{8}{c}{Polavc joint angle (\(\gamma\))} \\ \multicolumn{8}{c}{Left lower Limb} \\ \hline Anterior Tilt + & 0.40 & (0.00,0.88) & 16.0 & \(-0.1\) & \((-52.50)\) & 6.1 & \((-12.24,12.02)\) & 4.3 \\ Posterior Tilt \(-\) & 0.83 & (0.20,0.97) & 10.4 & \(-1.2\) & \((-52.28)\) & 4.7 & \((-10.85,8.19)\) & 3.3 \\ Oblique Up \(+\) & 0.84 & (0.20,0.97) & 2.7 & 0.5 & \((-17.27)\) & 2.6 & \((-46.59,6.69)\) & 1.8 \\ Oblique Down \(-\) & 0.75 & (0.00,0.95) & \(-4.5\) & 0.2 & \((-19.23)\) & 2.5 & \((-4.85^{\prime},5.29)\) & 1.8 \\ External Rotation \(-\) & 0.44 & (0.00,0.89) & \(-6.6\) & 0.2 & \((-64.70)\) & 8.0 & \((-15.56,16.10)\) & 5.3 \\ Internal Rotation \(+\) & 0.76 & (0.00,0.95) & 13.7 & 1.1 & \((-5.0,7.2)\) & 7.3 & \((-13.32,155.5)\) & 5.2 \\ \multicolumn{8}{c}{_Average_} \\ \hline \multicolumn{8}{c}{Right lower Limb} \\ \hline Anterior Tilt + & 0.51 & (0.00,0.91) & 16.1 & \(-0.8\) & \((-61.43)\) & 6.2 & \((-13.15,11.37)\) & 4.4 \\ Posterior Tilt \(-\) & 0.84 & (0.31,0.97) & 10.3 & \(-2.2\) & \((-18.16)\) & 4.6 & \((-13.10,6.82)\) & 3.2 \\ Oblique Up \(+\) & 0.67 & (0.00,0.94) & 3.8 & 0.1 & \((-22.25)\) & 2.8 & \((-54.58,581)\) & 2.0 \\ Oblique Down \(-\) & 0.85 & (0.31,0.97) & \(-2.7\) & \((-0.7)\) & 2.5 & \((-57.4,4.20)\) & 1.8 \\ External Rotation \(-\) & 0.88 & (0.44,0.98) & \(-12.0\) & \(-1.8\) & \((-62.24)\) & 5.2 & \((-10.85,8.32)\) & 3.6 \\ Internal Rotation \(+\) & 0.85 & (0.21,0.97) & 7.5 & \(-4.2\) & \((-87.0,0.2)\) & 5.4 & \((-14.80,6.30)\) & 3.8 \\ \multicolumn{8}{c}{_Average_} \\ \hline \multicolumn{8}{c}{Hip Joint angle (\(\gamma\))} \\ \multicolumn{8}{c}{Left lower Limb} \\ \hline \hline \multicolumn{8}{c}{Flexion +} & 0.79 & (0.00,0.96) & 45.0 & \(-1.4\) & \((-62.35)\) & 5.8 & \((-12.78,9.99)\) & 4.1 \\ Extension \(-\) & 0.78 & (0.00,0.96) & 1.3 & \(-0.7\) & \((58.4,3)\) & 6.1 & \((-12.72,11.20)\) & 4.3 \\ Abduction \(-\) & 0.60 & (0.00,0.92) & \(-10.4\) & 0.3 & \((-42.49)\) & 5.5 & \((-10.41,11.15)\) & 3.9 \\ Advduction \(+\) & 0.76 & (0.00,0.95) & 4.8 & 0.8 & \((-27.4,4.0)\) & 4.3 & \((-7.62,9.27)\) & 3.0 \\ External Rotation \(-\) & 0.58 & (0.00,0.90) & \(-8.9\) & 4.3 & \((-73.18,0.1)\) & 15.1 & \((-24.37,35.08)\) & 9.7 \\ Internal Rotation \(+\) & 0.67 & (0.00,0.92) & 3.9 & 4.9 & \((-41.16,10)\) & 12.0 & \((-7.62,9.46)\) & 8.5 \\ \multicolumn{8}{c}{_Average_} \\ \hline \multicolumn{8}{c}{Right lower Limb} \\ \hline \hline \multicolumn{8}{c}{Flexion +} & 0.14 & (0.00,0.89) & 45.5 & \(-0.9\) & \((-91.7,1.7)\) & 9.7 & \((-23.10,18.11)\) & 6.9 \\ Expansion \(-\) & 0.82 & (0.12,0.96) & 1.5 & \(-1.8\) & \((-76.3,1.9)\) & 6.9 & \((-15.46,11.80)\) & 4.9 \\ Advduction \(-\) & 0.75 & (0.00,0.95) & \(-9.9\) & 0.2 & \((-35.4,4.1)\) & 4.6 & \((-8.73,9.37)\) & 3.2 \\ Advduction \(+\) & 0.79 & (0.00,0.94) & \(-6.9\) & \(-0.4\) & \((-33.9,3.0)\) & 4.1 &  
\begin{table}
\begin{tabular}{l c c c c c c c c} \hline
**Kinematic Parameters** & **ICC** & **ICC 0\% C1** & **Mean** & **Mean Diff 0\% C1** & **SD\%** & **9\% LOA** & **SEM** \\ \hline \hline \multicolumn{10}{c}{Low target (C)} \\ \hline \multicolumn{10}{c}{Left lower limb} \\ \hline Fl Flacion + & 0.75 & (0.00,0.059) & 76.6 & 0.2 & (\(-65.72\)) & 8.1 & (\(-137.16\)) & 5.7 \\ Flacion - & 0.88 & (0.12,0.07) & 84.6 & 0.4 & (\(-36.41\)) & 4.7 & (\(-18.10\)) & 3.4 \\ Flacion - & 0.88 & (0.00,0.00) & 5.8 & 1.5 & (\(-27.10\)) & 11.2 & (\(-32.97\)) & 6.8 \\ Flacion - & 0.75 & (0.00,0.05) & -8.4 & \(-\)6.6 & (\(-75.66\)) & 8.7 & (\(-127.16\)) & 6.1 \\ Internal Rotation - & 0.62 & (0.00,0.02) & 4.7 & 3.0 & (\(-55.11\)) & 9.7 & (\(-159.21\)) & 6.8 \\ Average & 0.65 & & Right Lower Limb & & & & \\ \hline Flacion + & 0.86 & (0.23,0.07) & 68.5 & \(-0.1\) & (\(-83.81\)) & 9.8 & (\(-193.30\)) & 5.9 \\ Flacion - & 0.57 & (0.00,0.00) & 4.4 & 1.0 & (\(-62.64\)) & 2.8 & (\(-133.45\)) & 4.8 \\ Flacion + & 0.33 & (0.00,0.05) & 4.7 & \(-3.8\) & (\(-142.64\)) & 12.4 & (\(-32.21\)) & 5.7 \\ Flacion - & 0.76 & (0.00,0.05) & -7.5 & 3.5 & (\(-49.12\)) & 10.2 & (\(-164.23\)) & 7.2 \\ Internal Rotation - & 0.00 & (0.00,0.09) & 5.4 & 0.8 & (\(-144.13\)) & 14.6 & (\(-78.79\)) & 9.3 \\ Average & 0.55 & & & & & & & \\ \hline \multicolumn{10}{c}{Audio Joint angle (\(\gamma\))} \\ \multicolumn{10}{c}{Left lower limb} \\ \hline \multicolumn{10}{c}{Left lower limb} \\ \hline \multicolumn{10}{c}{Dosification +} & 0.46 & (0.00,0.00) & 9.8 & 3.3 & (\(-92.15\)) & 14.8 & (\(-256.32\)) & 10.4 \\ Parameter Precision - & 0.27 & (0.00,0.08) & -11.1 & 2.6 & (\(-105.15\)) & 15.7 & (\(-32.27\)) & 11.1 \\ Evsensen - & 0.60 & (0.00,0.01) & 1.2 &  
\begin{table}
\begin{tabular}{l c c c c c c c} \hline \hline
**Kinetic Parameters** & **ICC** & **ICC** & **ICC*\% CJ** & **Mean** & **Mean Diff** & **Mean Diff 95\% CJ** & **Sh/gr** & **99\% LOA** & **SEM** \\ \hline \hline \multicolumn{7}{c}{High Joint Moment (N m/Kg)} \\ \hline \multicolumn{7}{c}{Left lower (Limb)} \\ \hline