Functional claudication distance: a reliable and valid measurement to assess functional limitation in patients with intermittent claudication

Table 3 Rand-36 scores and Spearman's correlations with walking distances

Domain	Rand-36 score	ICD		FCD		ACD
	Median (IQR)	Correlation	P value	Correlation	P value	Correlation	P value
Physical function	55.6 (50.0 – 72.2)	0.473*	0.022	0.571**	0.004	0.496*	0.016
Social function	87.5 (75.0 – 100.0)	-0.046	0.836	0.001	0.998	-0.065	0.768
Physical role	75.0 (0.0 – 100.0)	0.407	0.054	0.532**	0.009	0.519*	0.011
Emotional role	100.0 (100.0 – 100.0)	0.068	0.758	0.157	0.476	0.121	0.584
Mental health	84.0 (64.0 – 92.0)	0.014	0.948	0.132	0.549	0.092	0.676
Vitality	60.0 (55.0 – 70.0)	0.152	0.488	0.416*	0.048	0.366	0.086
Pain	67.3 (55.1 – 69.4)	0.338	0.114	0.437*	0.037	0.352	0.099
General health	50.0 (40.0 – 60.0)	0.518*	0.011	0.392	0.065	0.371	0.081
Health change	50 (25.0 – 75.0)	0.382	0.072	0.414*	0.050	0.446*	0.033

IQR: inter quartile range, ICD: initial claudication distance, FCD: functional claudication distance, ACD: absolute claudication distance.
* Correlation is significant at the 0.05 level,
** Correlation is significant at the 0.01 level.

ISSN: 1471-2261