Table 2.

Linear and multiple regression analysis of associations between the components of physical fitness measured with SFT and demographic variables and comorbidity

Dependent and independent variables and covariates	Univariate analysis		Multiple analysisa
	B (95% CI)	p value	B (95% CI)	p value	R2
Chair sit and reach test					0.220
Study group (ref. = group 2)	−9.11 (−12.50; −5.72)	<0.001	−8.27 (−11.53; −5.01)	<0.001
Age	−0.20 (−0.48; 0.09)	0.173	−0.25 (−0.51; 0.01)	0.064
Gender (ref. = man)	8.59 (5.14; 12.03)	<0.001	8.20 (4.63; 11.78)	<0.001
Married/cohabitant (ref. = yes)	4.62 (1.07; 8.16)	0.011	0.51 (−3.09; 4.11)	0.779
Comorbidity	0.34 (−1.10; 1.79)	0.639
BMI	0.17 (−0.21; 0.54)	0.384
Up&go test					0.317
Study group (ref. = group 2)	2.07 (1.27; 2.86)	<0.001	2.71 (1.93; 3.50)	<0.001
Age	0.16 (0.09; 0.22)	<0.001	0.15 (0.09; 0.21)	<0.001
Gender (ref. = man)	1.15 (0.31; 1.98)	0.007	0.74 (−0.17; 1.50)	0.055
Married/cohabitant (ref. = yes)	0.65 (−0.18; 1.49)	0.125
Comorbidity	0.39 (0.05; 0.72)	0.024	0.77 (0.47; 1.08)	<0.001
BMI	−0.07 (−0.16; 0.01)	0.098
6-min walk test					0.382
Study group (ref. = group 2)	−32.26 (−65.09; 0.57)	0.054	−82,47 (−112,95; −51,99)	<0.001
Age	−6.25 (−8.81; −3.69)	<0.001	−7.32 (−9.62; −5.02)	<0.001
Gender (ref. = man)	−69.84 (−101.53; −38.15)	<0.001	−52.39 (−80.83; −23.95)	<0.001
Married/cohabitant (ref. = yes)	−31.50 (−64.14; 1.14)	0.059
Comorbidity	−28.07 (−40.78; −15.36)	<0.001	−31.62 (−43.26; −20.05)	<0.001
BMI	−3.63 (−7.07; −0.19)	0.039	−7.31 (−10.55; −4.07)	<0.001

B = Unstandardized coefficients; CI = confidence interval; R² = explained variance of the model.

^aAdjustment for variables significantly associated with the actual component of physical fitness in the univariate analyses.