Table 3 Multivariate multiple regression models of the relationship between PAAGES-I and hypothesized NTRAAGES-II mediators.

From: Soft tissue radiodensity parameters mediate the relationship between self-reported physical activity and lower extremity function in AGES-Reykjavík participants

Tiss

Variable

Amplitude: \(N\)

Location: \(\mu\)

Width: \(\sigma\)

Skewness: \(\alpha\)

β

SE

p-value

β

SE

p-value

β

SE

p-value

β

SE

p-value

Fat

PAAGES-I

− 0.0164

0.214

0.108

− 0.0233

0.054

0.203

0.0409

0.058

0.011

− 0.0323

0.021

0.054

Age

− 0.0165

0.070

0.107

0.0320

0.018

0.081

0.0354

0.019

0.028

− 0.0703

0.007

< 0.001

Sex

0.5544

0.676

< 0.001

0.0476

0.170

0.008

− 0.4222

0.184

< 0.001

0.2820

0.066

< 0.001

BMI

0.5884

0.077

< 0.001

0.0761

0.020

< 0.001

− 0.2000

0.021

< 0.001

0.2587

0.008

< 0.001

Muscle

PAAGES-I

0.0841

0.130

< 0.001

0.1076

0.031

< 0.001

− 0.0408

0.025

0.008

− 0.0276

0.009

0.114

Age

− 0.2152

0.043

< 0.001

− 0.2434

0.010

< 0.001

0.1381

0.008

< 0.001

0.1822

0.003

< 0.001

Sex

− 0.5082

0.410

< 0.001

− 0.0717

0.099

< 0.001

0.2243

0.081

< 0.001

0.1920

0.028

< 0.001

BMI

0.5135

0.047

< 0.001

0.1242

0.011

< 0.001

0.4722

0.009

< 0.001

0.1689

0.003

< 0.001

Connective

PAAGES-I

− 0.0001

0.071

0.991

0.0243

0.224

0.054

0.0155

0.063

0.384

 

N/A

Age

− 0.0437

0.023

< 0.001

− 0.0392

0.074

0.002

− 0.1437

0.021

< 0.001

 

Sex

− 0.3507

0.225

< 0.001

− 0.6422

0.709

< 0.001

0.1876

0.198

< 0.001

 

BMI

0.6716

0.026

< 0.001

− 0.3107

0.081

< 0.001

− 0.0581

0.022

0.001

 
  1. p-value did not surpass HB correction for multiple comparisons.