Psychometric evaluation of the Coronary Revascularisation Outcome Questionnaire (CROQ) in Norwegian patients admitted to elective coronary angiography and possible percutaneous coronary intervention

Table 4 Baseline to post-test change score differences in CROQ scores between the PCI and the non-PCI patient groups

	Patients receiving PCI n = 104			Non-significant stenosis group n = 128
CROQ Scores (range 0–100)	Baseline M (SD)	Post M (SD)	r _95%CI d _95%CI	Baseline M (SD)	Post M (SD)	r _95%CI d _95%CI	diff¹ _95%CI diff² _95%CI
Symptoms	71.5 (20.1)	88.9 (13.4)	.44 _.22–.62 .94 _.71–1.17	70.9 (17.2)	86.8 (12.5)	.46 _.30–.61 1.00 _.79–1.21	1.5 _{–2.7 \| 5.9} 2.0 _{–2.3 \| 6.4}
Physical functioning	75.2 (23.4)	85.6 (18.7)	.53 _.36–.68 .50 _.29–.70	73.0 (24.4)	78.2 (23.0)	.76 _.66–.84 .31 _.14–.49	5.5* _{0.7 \| 10.3} 6.0* _{1.1 \| 10.9}
Psychosocial functioning	73.4 (17.5)	85.1 (13.7)	.56 _.43–.67 .77 _.55–.99	70.2 (18.9)	81.8 (16.5)	.72 _.63–.80 .88 _.67–1.08	0.1 –_{3.5 \| 3.7} 0.03 –_{3.6 \| 3.7}
Cognitive functioning	84.9 (16.2)	89.9 (12.1)	.60 _.41–.75 .38 _.18–.58	80.1 (19.0)	86.3 (15.8)	.53 _.35–.69 .36 _.18–.54	–0.7 _{–4.5 \| 3.0} –0.9* _{–4.9 \| 3.0}

M = mean, SD = standard deviation, r = pre-post stability coefficient (Pearson’s r), d = Cohen’s d standardized pre-post mean difference (effect size), _95%CI = 95% confidence interval
diff¹ = Significance test for change score differences between the two groups, diff² = same as diff¹, plus adjustment for gender, age and cohabitation. * p-value between .01 and .05

ISSN: 1477-7525