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Table 5 Factors associated with bone density

From: The relationship between bone density and the oral function in older adults: a cross-sectional observational study

All subjects

B

Standard error

β

t-value

P-value

CI

Lower-Upper

Sex

(0:Male, 1:Female)

−13.898

1.848

−0.28

−7.519

< 0.001

−17.527

−10.268

Age (years)

−0.741

0.164

−0.185

−4.505

< 0.001

−1.063

− 0.418

BMI (kg/m2)

1.06

0.303

0.128

3.494

0.001

0.464

1.656

One-leg standing (sec)

0.116

0.044

0.108

2.631

0.009

0.029

0.203

Occlusal force (kgf)

0.054

0.023

0.09

2.39

0.017

0.01

0.098

(constant)

1522.885

15.418

 

98.771

< 0.001

1492.608

1553.163

SMI (kg/m2)

0.009

 

0.016

0.219

0.827

  

Tongue pressure (kPa)

0.024

 

0.023

0.607

0.544

  

Masticatory performance (score)

0.024

 

0.029

0.595

0.552

  

Knee extension force (N)

0.033

 

0.044

0.832

0.406

  

Males only

B

Standard error

β

t-value

P-value

CI Lower-Upper

One-leg standing (sec)

0.156

0.033

0.277

4.670

< 0.001

0.090

0.222

BMI (kg/m2)

0.922

0.264

0.205

3.493

0.001

0.402

1.442

Occlusal force (kgf)

0.039

0.018

0.133

2.237

0.026

0.005

0.074

(constant)

50.183

6.249

 

8.030

< 0.001

37.874

62.492

Masticatory performance (score)

−0.024

 

−0.031

−0.372

0.71

  

SMI (kg/m2)

0.037

 

0.052

0.581

0.562

  

Knee extension force (N)

0.016

 

0.016

0.247

0.805

  

Age (years)

−0.101

 

−0.105

−1.599

0.111

  

Females only

B

Standard error

β

t-value

P-value

CI Lower-Upper

Age (years)

−0.522

0.125

− 0.245

−4.165

< 0.001

− 0.768

−0.275

(constant)

117.944

9.272

 

12.720

< 0.001

99.690

136.198

Tongue pressure (kPa)

−0.021

 

−0.022

− 0.349

0.727

  

Knee extension force (N)

0.09

 

0.097

1.492

0.137

  

Occlusal support (reference Group A)

–

 

–

–

–

  

Group B

0.04

 

0.039

0.658

0.511

  

Group C

−0.027

 

−0.028

−0.445

0.657

  
  1. The multiple regression analysis was performed as follows: Dependent variable: SOS, explanatory variables: items significantly associated with bone density in Tables 3 and 4, adjusted variables: age, and sex (only All subjects formula) stepwise selection method (input 0.05, removal 0.10). Italicized explanatory variables are variables that have been removed from the final multiple regression formula
  2. B: Unstandardized coefficient, β: Standardized coefficient, CI: 95% confidence interval for unstandardized coefficient
  3. The coefficient of determination: All subjects; R2 = 0.185, Males only; R2 = 0.155, Females only; R2 = 0.06
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BMC Geriatrics

ISSN: 1471-2318

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