Table 5

Construct validity of the CROQ (post-revascularisation): correlations with other measures

CROQ scale	SF-36		SAQ
CROQ scale	PCS	MCS	Exertional capacity	Anginal frequency	Treatment satisfaction
*Correlations between scales that purport to measure similar aspects of health related quality of life.
MCS, mental component summary score; PCS, physical component summary score.
CROQ-CABG_Post
Symptoms	0.60*	0.36	0.59	0.74*	0.62
Physical functioning	0.75*	0.36	0.67*	0.47	0.35
Psychosocial functioning	0.59	0.64*	0.76	0.52	0.55
Cognitive functioning	0.44	0.46*	0.73	0.40	0.41
Adverse effects	0.51	0.46	0.44	0.51	0.52
Satisfaction	0.51	0.37	0.45	0.46	0.65*
CROQ-PTCA_Post
Symptoms	0.68*	0.32	0.69	0.86*	0.70
Physical functioning	0.75*	0.37	0.90*	0.70	0.56
Psychosocial functioning	0.49	0.73*	0.77	0.62	0.58
Cognitive functioning	0.36	0.49*	0.65	0.50	0.38
Adverse effects	0.25	0.21	0.44	0.45	0.35
Satisfaction	0.29	0.38	0.53	0.59	0.72*