Table 4.

Correlations between brief scale scores and existing measures (convergent validity)

Variable	Baseline	Week 3	Week 6	Week 9	Week 12
Correlation with fatigue/activity scores
Nondominant handgrip strength	0.26**	NA	0.27**	NA	0.28**
FAACT	0.68**	0.77**	0.83**	0.76**	0.76**
FACIT-fatigue scale	0.91**	0.92**	0.93**	0.93**	0.91**
FACT-G physical well-being	0.74**	0.83**	0.83**	0.81**	0.78**
FACT-G emotional well-being	0.47**	0.62**	0.65**	0.52**	0.59**
FACT-G social/family well-being	0.04	0.09	0.20**	0.19*	0.10
FACT-G functional well-being	0.41**	0.42**	0.51**	0.50**	0.52**
FACT-G total	0.59**	0.71**	0.77**	0.69**	0.68**
Karnofsky performance status	0.23**	0.22**	0.31**	0.20*	0.37**
Lean body mass	0.19**	NA	0.13*	NA	0.15*
Body weight	0.18**	0.16*	0.11	0.12	0.16*
I have felt hungry	0.12*	0.06	0.10	0.09	0.19*
My family and friends are pleased with my appetite	0.38**	0.29**	0.33**	0.37**	0.46**
Correlation with appetite/eating scores
Nondominant handgrip strength	0.23**	NA	0.23**	NA	0.27**
FAACT	0.68**	0.69**	0.74**	0.75**	0.77**
FACIT-Fatigue scale	0.56**	0.49**	0.60**	0.58**	0.66**
FACT-G physical well-being	0.45**	0.49**	0.54**	0.57**	0.64**
FACT-G emotional well-being	0.29**	0.38**	0.44**	0.41**	0.47**
FACT-G social/family well-being	0.09	0.07	0.12	0.18*	0.07
FACT-G functional well-being	0.45**	0.44**	0.44**	0.46**	0.53**
FACT-G total	0.46**	0.49**	0.54**	0.55**	0.59**
Karnofsky performance status	0.20**	0.26**	0.31**	0.30**	0.27**
Lean body mass	0.18**	NA	0.17*	NA	0.19*
Body weight	0.25**	0.22**	0.21**	0.32**	0.19*
I have felt hungry	0.27**	0.37**	0.29**	0.27**	0.35**
My family and friends are pleased with my appetite	0.70**	0.68**	0.65**	0.67**	0.71**

NA not applicable as handgrip strength and lean body mass were only assessed at baseline, week 6 and week 12

*p < 0.05; **p < 0.001