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Table 6 Eigenvalues and eigenvectors of the correlation matrix of 11 independent variables considering R and Xc

From: Integrated analysis of clinical, bioelectrical and functional variables in newly diagnosed lung cancer adult patients: pilot study

Eigenvalues

3.2383

2.0543

1.6718

1.0872

1.0376

0.7220

0.5819

0.2807

0.2091

0.1160

0.0010

Proportion

0.294

0.187

0.152

0.099

0.094

0.066

0.053

0.026

0.019

0.011

0.000

Accumulated

0.294

0.481

0.633

0.732

0.826

0.892

0.945

0.970

0.989

1.000

1.000

Eigenvectors

 Variables

PC1

PC2

PC3

PC4

PC5

PC6

PC7

PC8

PC9

PC10

PC11

 Age

0.147

0.054

0.510

−0.532

0.178

0.106

0.357

0.438

− 0.211

0.160

− 0.005

 Gender

0.368

− 0.363

− 0.074

− 0.249

− 0.003

− 0.382

0.032

0.086

0.710

0.074

− 0.019

 Weight

−0.432

−0.291

0.329

−0.014

− 0.176

0.006

0.027

−0.120

0.134

0.058

0.744

 Height

−0.457

0.077

0.156

0.239

−0.082

0.391

0.151

0.250

0.520

0.179

−0.394

 R

0.161

−0.461

−0.008

0.475

−0.147

− 0.028

0.544

0.248

−0.188

− 0.346

−0.028

 Xc

−0.152

−0.480

− 0.426

0.005

0.251

0.089

−0.109

0.239

−0.247

0.604

0.011

 θ

−0.280

−0.202

− 0.368

−0.479

0.241

0.339

0.088

−0.039

0.079

−0.572

−0.013

 ECOG

0.413

−0.164

0.092

0.016

0.051

0.583

0.212

−0.590

0.070

0.232

0.009

 TS

0.208

−0.092

−0.108

− 0.205

−0.766

0.341

−0.323

0.283

−0.074

− 0.028

0.017

 HV

0.195

−0.252

0.382

0.246

0.401

0.222

−0.606

0.214

0.047

−0.258

0.011

 BMI

−0.264

−0.439

0.345

−0.196

− 0.192

−0.246

− 0.130

−0.360

− 0.217

−0.014

− 0.538

  1. R, Xc, θ, ECOG, TS, HV, and BMI were the body electrical resistance, body electrical capacitive reactance, body phase angle, Eastern Cooperative Oncology Group, tumor stage, histological variety of the tumor, and body mass index, respectively. PCi (i = 1, …, 11) meant type of principal component