Table 4.

Correlations between KCCQ subscales and NYHA class or Six-Minute Walk Test

	NYHA	p value	Walk distance	p value
Kansas City Cardiomyopathy Questionnaire subscales
Physical limitation	−0.46	<0.001	0.18	0.04
Symptom stability	−0.08	0.02	0.33	0.01
Symptom frequency	−0.43	<0.001	0.31	0.01
Symptom burden	−0.40	<0.001	0.26	0.04
Total symptom score	−0.43	<0.001	0.30	0.02
Self-efficacy	−0.14	0.09	0.18	0.16
Quality of life	−0.33	<0.001	0.27	0.03
Social limitation	−0.39	<0.001	0.24	0.07
Overall summary score	−0.44	<0.001	0.27	0.03
Clinical summary score	−0.46	<0.001	0.25	0.04