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Table 8 Item-scale correlation matrix for the CHFQOLQ-20 (n = 495)

From: Chronic heart failure health-related quality of life questionnaire (CHFQOLQ-20): development and psychometric properties

Items

Factor 1 (Physical functioning)

Factor 2 (Cognitive functioning)

Factor 3 (General health)

Factor 4 (Mental health)

q1

0.798

0.362

0.347

0.502

q2

0.871

0.352

0.395

0.498

q3

0.868

0.331

0.394

0.494

q4

0.885

0.360

0.406

0.493

q5

0.834

0.301

0.406

0.433

q6

0.758

0.273

0.311

0.372

q7

0.809

0.414

0.377

0.483

q8

0.774

0.401

0.436

0.519

q9

0.688

0.415

0.406

0.498

q10

0.728

0.335

0.421

0.429

q11

0.400

0.816

0.231

0.393

q12

0.284

0.823

0.199

0.275

q13

0.326

0.837

0.217

0.318

q14

0.392

0.737

0.177

0.477

q15

0.416

0.226

0.844

0.407

q16

0.415

0.177

0.877

0.322

q17

0.404

0.268

0.805

0.383

q18

0.564

0.387

0.353

0.819

q19

0.447

0.326

0.359

0.776

q20

0.421

0.436

0.356

0.852