Validation of the Taiwan Chinese version of the EORTC QLQ-CR29 to assess quality of life in colorectal cancer patients

Table 3 Reliability, convergent and discriminative validity of the Taiwan Chinese EORTC QLQ-C30 and QLQ-CR29

Scale	Convergent validity	Discriminative validity	Cronbach’s α
QLQ-C30 function
QL2	0.95-0.96	0.27-0.54	0.88
PF	0.57-0.87	0.06-0.49	0.82
RF	0.96-0.97	0.12-0.54	0.93
EF	0.70-0.86	0.10-0.52	0.8
CF	0.78-0.82	0.07-0.45	0.45
SF	0.85-0.91	0.09-0.52	0.73
QLQ-C30 Symptom
FA	0.86-0.87	0.12-0.41	0.83
NV	0.86-0.93	0.13-0.32	0.75
PA	0.84	0.01-0.42	0.61
QLQ-CR29 function
BI	0.87-0.90		0.9
QLQ-CR29 symptom
UF	0.91	0.04-0.32	0.82
BMS	0.88	0.01-0.37	0.78
SF2	0.84-0.91	0.27-0.35	0.7

QL2 global health/quality of life, PF physical function, RF role function, EF emotion function, CF cognitive function, SF social function, FA fatigue, NV nausea/vomiting, PA pain, BI body image, UF urinary frequency, BMS blood and mucus in stool, SF2 stool frequency

ISSN: 1471-2407