Table 4 Factor analysis of Pedi-IKDC questionnaire

Symptom 1

0.3128

0.8537

Symptom 2

0.5777

0.2939

Symptom 3

0.3902

0.3986

Symptom 4

0.6015

0.3102

Symptom 5

0.4291

0.2626

Symptom 6

0.2866

0.7925

Symptom 7

0.1394

0.0743

Symptom 8

0.2070

0.2293

Symptom 9

0.2512

0.8947

Sports activity 10

0.4699

0.4834

Sports activity 11a

0.8454

0.2659

Sports activity 11b

0.8123

0.3110

Sports activity 11c

0.7035

0.2581

Sports activity 11d

0.7266

0.2925

Sports activity 11e

0.5934

0.1622

Sports activity 11f

0.6767

0.2361

Sports activity 11 g

0.7804

0.4383

Sports activity 11 h

0.7753

0.3876

Sports activity 11i

0.7319

0.4619