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. Author manuscript; available in PMC: 2017 Jun 14.
Published in final edited form as: J Biomech. 2016 May 10;49(9):1909–1917. doi: 10.1016/j.jbiomech.2016.04.039

Table 2.

Results of multiple linear regression analyses. Given are: R2 values and p-values for overall regressions on dependent factors Y, regression coefficients A1 and A2 (± 95% confidence intervals) corresponding to dependent factors X1 and X2 (either GAG & COL or Day and ρ), and p-values for each factor X1 and X2.

Y R2 p (total) A1 (kPa)
[X1 = GAG]		 p (X1) A2 (kPa)
[X2 = COL]		 p (X2)
EY 0.78 <0.0001 41.8±3.2 <0.0001 6.1±10.4 0.56
G* 0.83 <0.0001 156.2±10.9 <0.0001 82.0±35.5 <0.05
Y R2 p (total) A1 (kPa·day−1)
[X1 = Day]		 p (X1) A2 (kPa·mL·cells−1)
[X2 = ρ]		 p (X2)
EY 0.57 <0.0001 0.52±0.30 0.08 1.81±0.17 <0.0001
G* 0.51 <0.0001 3.3±1.3 <0.05 6.69±0.72 <0.0001
Y R2 p (total) A1 (%/ww·day−1)
[X1 = Day]		 p (X1) A2 (%/ww·mL·cells−1)
[X2 = ρ]		 p (X2)
GAG 0.68 <0.0001 0.014±0.007 0.066 0.04±0.003 <0.0001
COL 0.19 <0.005 0.0068±0.0036 0.065 0.0061±0.0017 <0.001