International phase IV validation study of an EORTC quality of life questionnaire for testicular cancer patients: the EORTC QLQ-TC26

Table 3 Internal consistency, test-retest reliability and standardised factor loadings for the QLQ-TC26

Scale	Cronbach’s Alpha	Test-retest ICC	Item #	Standardised Factor Loading
Treatment Side-effects	0.80	0.91	Item 1	0.752
			Item 2	0.776
			Item 3	0.769
			Item 4	0.721
			Item 5	0.752
			Item 6	0.621
			Item 7	0.711
			Item 8	0.624
Treatment Satisfaction	0.87	0.48	Item 9	0.977
			Item 10	0.912
Future Perspective	0.79	0.71	Item 11	0.889
			Item 12	0.852
Job and Education Problems		0.81	Item 13	0.810
Physical Limitation		0.67	Item 14	0.670
Family Problems		0.65	Item 15	0.650
Infertility		0.82	Item 16	0.820
Communication	0.67	0.80	Item 17	0.708
			Item 21	0.944
Body Image Problems		0.75	Item 18	0.750
Sexual Activity	0.81	0.84	Item 19	0.905
			Item 20	0.825
Sexual Functioning	0.62	0.89	Item 22	0.780
			Item 23	0.765
Sexual Enjoyment	0.90	0.73	Item 24	0.955
			Item 25	0.954
Testicular Implant Satisfaction^a		0.69	Item 26

^aThis conditional scale has been excluded from the confirmatory factor analysis
RMSEA = 0.046; CFI = 0.974; TLI = 0.963

ISSN: 1471-2407