Psychometric properties of the fatigue questionnaire EORTC QLQ-FA12 and proposal of a cut-off value for young adults with cancer

Table 4 Discriminant and convergent validity for model M1 (n = 577)

Domain	Physical	Emotional	Cognitive	CR	Cronbach’s Alpha^a
Physical fatigue	0.698	0.487	0.407	0.920	0.918
Emotional fatigue	0.697	0.734	0.487	0.892	0.891
Cognitive fatigue	0.638	0.698	0.593	0.742	0.732

Above the diagonal (underlined values): squared correlations (r²). On the diagonal (bold values): average variance extracted (AVE). Below the diagonal: correlations (r). Discriminant validity is indicated if AVE_D1 > r²_(D1,D2) and AVE_D2 > r²_(D1,D2) and convergent validity if composite reliability CR > 0.6.; ^a based on standardized items

ISSN: 1477-7525