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Table 8 Exploratory Factor Analysis (EFA): Item factor loadings for the Job Content Questionnaire (JCQ) – rotated matrix (Promax)

From: Measuring job stress in transportation workers: psychometric properties, convergent validity and reliability of the ERI and JCQ among professional drivers

JCQ Item

Supervisor Support

Co-worker Support

Psychological Job Demands

Decision Authority

Skill Discretion

JCQ14

.883

.437

−.273

.419

.152

JCQ15

.857

.416

−.261

.393

.170

JCQ16

.854

.507

−.329

.376

.208

JCQ13

.846

.482

−.317

.388

.209

JCQ19

.450

.844

−.174

.218

.140

JCQ20

.391

.828

−.175

.189

−.016

JCQ18

.510

.827

−.274

.271

.223

JCQ17

.364

.743

−.196

.244

.224

JCQ9

−.144

−.132

.829

−.026

.017

JCQ8

−.385

−.332

.806

−.270

.057

JCQ10

−.197

−.078

.805

−.090

.132

JCQ12

−.316

−.277

.593

−.301

.199

JCQ11

.212

.163

−.295

.016

.170

JCQ3

.313

.300

−.231

.787

.122

JCQ6

.555

.291

−.209

.784

.314

JCQ4

.210

.067

.018

.741

.148

JCQ2

.169

.089

.104

.224

.789

JCQ1

.311

.236

−.163

.456

.739

JCQ5

.142

.115

.063

.106

.716

JCQ7

.208

.213

−.080

.424

.562