Table 7. Pearson’s correlation coefficients among subscales in the Standard Chinese version of the EORTC QLQ C-30 among patients completed questionnaires prior to their first cycle of treatment (T1, n=143), and the second column is among patients completed questionnaires on the last day of the first cycle of treatment (T2, n=142).

Scales	PF	RF	EF	CF	SF	QL	FA	NV	PA
Physical functioning (PF)		0.57	0.45	0.47	0.50	0.37	-0.68	-0.38	-0.61
role functioning (RF)	0.66		0.28	0.32	0.46	0.20	-0.48	-0.21	-0.41
emotional functioning (EF)	0.44	0.32		0.60	0.50	0.43	-0.54	-0.27	-0.46
cognitive functioning (CF)	0.43	0.29	0.65		0.48	0.26	-0.51	-0.30	-0.44
social functioning (SF)	0.47	0.58	0.42	0.44		0.37	-0.49	-0.27	-0.48
global health/QOL (QL)	0.44	0.30	0.38	0.30	0.31		-0.46	-0.22	-0.48
fatigue (FA)	-0.67	-0.48	-0.59	-0.41	-0.39	-0.42		0.44	0.67
nausea and vomiting (NV)	-0.46	-0.26	-0.33	-0.24	-0.25	-0.29	0.40		0.34
pain (PA)	-0.55	-0.34	-0.58	-0.48	-0.41	-0.47	0.67	0.37

The negative values refer to an inverse correlation: e.g., the higher the fatigue, the lower the physical functioning.

Numbers above the diagonal are T1, while those below (in italics) are T2.