Table 3 Univariate and multivariate linear regression models for the evaluation of factors related to blood urea nitrogen

Fasting blood sugar (mg/dl)

0.079

 < 0.001

0.044

0.114

-

-

-

-

Triglyceride (mg/dl)

0.030

0.091

-0.005

0.066

0.056

0.011

0.013

0.098

Total cholesterol (mg/dl)

0.033

0.068

-0.002

0.068

0.041

0.051

0.000

0.083

High-density lipoprotein (mg/dl)

-0.029

0.110

-0.064

0.006

0.047

0.027

0.005

0.089

Low-density lipoprotein (mg/dl)

0.027

0.140

-0.009

0.062

-

-

-

-

Systolic blood pressure (mmHg)

0.125

 < 0.001

0.091

0.160

-

-

-

-

Diastolic blood pressure (mmHg)

0.106

 < 0.001

0.071

0.141

-0.036

0.071

-0.075

0.003

Height (cm)

0.209

 < 0.001

0.174

0.243

-

-

-

-

Weight (kg)

0.128

 < 0.001

0.094

0.163

0.037

0.083

-0.005

0.079

Waist circumference (cm)

0.057

0.002

0.021

0.092

-

-

-

-

Hip circumference (cm)

-0.012

0.519

-0.047

0.024

-

-

-

-

Body mass index (kg/m²)

-0.014

0.435

-0.049

0.021

-

-

-

-

A body shape index \({(\mathbf{m}/\mathbf{k}\mathbf{g})}^{2/3}\)

0.027

0.128

-0.008

0.063

-

-

-

-

Abdominal volume index (m ² )

0.057

0.002

0.022

0.092

-

-

-

-

Conicity index \({(\mathbf{m}/\mathbf{k}\mathbf{g})}^{1/2}\)

0.008

0.664

-0.027

0.043

-

-

-

-

Body adiposity index (1/ \({\mathbf{m}}^{1/2}\) ) %

0.203

 < 0.001

0.168

0.237

0.064

0.008

0.016

0.111

Visceral adiposity index ( \({\mathbf{m}}^{3}\) /kg)

0.043

0.017

0.008

0.078

-

-

-

-

Dietary inflammatory index

0.098

 < 0.001

0.063

0.133

-

-

-

-

Age (year)

0.015

 < 0.001

0.009

0.021

0.015

 < 0.001

0.009

0.021

Sex

 Male

Ref

-

-

-

Ref

-

-

-

 Female

-0.622

 < 0.001

-0.697

-0.547

-0.603

 < 0.001

-0.729

-0.477