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

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

Domain Physical Emotional Cognitive CR Cronbach’s Alphaa
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
  1. 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 AVED1 > r2(D1,D2) and AVED2 > r2(D1,D2) and convergent validity if composite reliability CR > 0.6.; a based on standardized items