. 2020 Feb 19;13:451–462. doi: 10.2147/DMSO.S235015

Table 3.

Influence of BMI and Age on BBS, TUG, and PBFS Results in Both Groups

Spearman Correlation Coefficient (BMI)
Variables	Study Group	Control Group
BBS [pts]	rho = −0.415 p = 0.028	rho = −0.722 p < 0.001
BMI [kg/m²]	rho = −0.415 p = 0.028	rho = −0.722 p < 0.001
TUG [s]	rho = 0.285 p = 0.141	rho = 0.419 p = 0.021
BMI [kg/m²]	rho = 0.285 p = 0.141	rho = 0.419 p = 0.021
PBFS [mmHg]	rho = 0.05 p = 0.808	rho = 0.307 p = 0.099
BMI [kg/m²]	rho = 0.05 p = 0.808	rho = 0.307 p = 0.099
Spearman correlation coefficient (age)
Variables	Study group	Control group
BBS [pts]	rho = −0.585 p = 0.001	rho = −0.771 p < 0.001
Age [years]	rho = −0.585 p = 0.001	rho = −0.771 p < 0.001
TUG [s]	rho = 0.604 p = 0.017	rho = 0.321 p = 0.118
Age [years]	rho = 0.604 p = 0.017	rho = 0.321 p = 0.118
PBFS [mmHg]	rho = 0.604 p = 0.017	rho = 0.321 p = 0.118
Age [years]	rho = 0.604 p = 0.017	rho = 0.321 p = 0.118
Spearman correlation coefficient (clinimetrics)
Variables	Study group	Control group
PBFS [mmHg]	rho = −0.134 p = 0.541	rho = −0.358 p = 0.052
BBS [pts]	rho = −0.134 p = 0.541	rho = −0.358 p = 0.052
PBFS [mmHg]	rho = 0.180 p = 0.411	rho = 0.352 p = 0.056
TUG [s]	rho = 0.180 p = 0.411	rho = 0.352 p = 0.056

Abbreviations: BBS, Berg Balance Scale; TUG, Timed Up and Go test; PBFS, Pressure Bio-Feedback Stabilizer; BMI, Body Mass Index; p, statistical significance; rho, Spearman correlation coefficient.