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Table 3 Descriptive statistics of all the variables over the whole sample size.* after the variable indicates a significant difference. For all variables the degree of freedom is df = 799

From: Systematic changes of the static upper body posture with a symmetric occlusion condition

Variable names Habitual Cotton role Difference cotton role - habitual T value P value
Median 1st quantile 3rd quantile Median 1st quantile 3rd quantile Median 1st quantile 3rd quantile
Spinal column:
Trunk length D [mm]* 470 447 493 469 445 493 −0.72 − 2.09 0.55 5.1 < 0.001
Trunk length S [mm]* 513 490 537 513 490 537 −0.87 −2.32 0.66 5.0 <  0.001
Sagittal trunk decline [°]* −3.28 −5.30 −1.55 − 3.13 − 4.99 − 1.37 0.16 −0.33 0.73 −6.6 <  0.001
 frontal trunk decline [°] −0.16 − 1.00 0.67 − 0.16 − 1.00 0.68 − 0.01 − 0.30 0.24 1.5 0.144
 Axis decline [°] −0.67 −2.00 0.91 −0.64 −2.00 1.04 0.01 −0.33 0.33 − 0.3 0.757
Thoracic bending angle [°]* 15.1 12.2 17.7 15.2 12.4 18.1 0.14 −0.50 0.87 −3.4 0.001
lumbar bending angle [°]* 12.3 9.9 14.9 12.6 10.1 15.2 0.30 −0.16 0.89 −4.7 < 0.001
 SD of lateral deviation[°] 3.81 2.65 5.33 3.94 2.65 5.54 0.06 −0.49 0.63 −1.3 0.178
 Maximal lateral deviation [°] −4.27 −7.79 3.58 −4.57 −7.99 4.21 −0.03 −1.31 1.13 0.4 0.661
 SD of rotation [°] 3.90 2.74 5.51 4.02 2.71 5.76 0.07 −0.62 0.79 −2.3 0.019
 Maximum of rotation [°] 4.30 −6.62 8.66 4.56 −6.99 8.75 −0.01 −2.23 2.11 1.0 0.331
 Kyphosis angle [°] 53.3 45.6 61.7 53.4 45.8 62.8 0.67 −1.18 2.59 −2.7 0.006
 Lordosis angle [°] 38.4 30.7 49.6 38.8 31.2 49.6 0.40 − 0.73 1.60 −1.5 0.135
Shoulder variables
Scapular distance [mm]* 174 156 193 174 156 193 −0.36 −2.25 1.12 3.5 0.001
 Scapular height [°] −1.99 −6.57 3.43 −2.08 −6.87 3.08 −0.12 −1.28 1.04 2.6 0.010
 Scapular rotation [°] 1.28 −0.93 3.43 1.24 −1.00 3.62 0.00 −0.93 0.91 0.1 0.949
 Scapular angle left [°] 26.7 23.2 30.9 27.0 23.5 31.0 0.23 −1.15 1.47 −1.9 0.054
 Scapular angle right [°] 28.4 24.7 32.7 29.1 25.1 33.0 0.33 −1.51 2.52 −2.4 0.015
Pelvic variables
 Pelvis distance [mm] 98.0 88.7 109.2 97.7 88.7 109.1 −0.01 − 0.31 0.24 0.8 0.398
 Pelvis tilt [°] −0.42 −1.72 1.02 −0.35 −1.72 1.02 0.01 −0.20 0.27 −1.3 0.185
 Pelvis tilt [mm] −0.72 −3.00 1.85 −0.57 −2.96 1.87 0.02 −0.34 0.43 −1.2 0.221
 Pelvis torsion [°] 0.36 −2.98 3.68 0.34 −2.81 3.66 −0.01 −0.95 1.00 −1.1 0.286
 Pelvis rotation [°] 0.50 −1.96 2.94 0.47 −2.07 3.16 −0.09 −0.98 0.85 0.9 0.388