Validation of the chinese version of the EORTC QLQ-CR29 in patients with colorectal cancer

Table 2 Item convergent and discriminant validity for the EORTC QLQ-CR29 scales, and for patients with and without a stoma

QLQ-CR29 scales	Total sample (n = 354)1			Without a stoma (n = 298)			With a stoma (n = 56)
	Convergent	Discriminant	α	Convergent	Discriminant	α	Convergent	Discriminant	α
Urinary frequency	0.589-0.923	0.004-0.306	0.406	0.588-0.924	0.002-0.321	0.363	0.587-0.919	0.017-0.333	0.608
Blood or mucus in stools	0.794-0.886	0.004-0.712	0.641	0.790-0.891	0.002-0.738	0.638	0.815-0.829	0.037-1.000	0.632
Stool frequency	0.689-0.965	0.003-0.641	0.679	0.696-0.967	0.001-0.669	0.716	0.645-0.957	0.003-0.389	0.423
Body image	0.628-0.826	0.060-0.405	0.715	0.614-0.839	0.039-0.422	0.718	0.703-0.792	0.004-0.504	0.676

¹Two are missing.