Table 3 Spearman rank correlations between the total Spondyloarthritis Research Consortium of Canada (SPARCC) enthesitis score and measures of disease activity, function and quality of life in ankylosing spondylitis patients

	BASDAI	BASDAI Item 4*	Patient global	BASFI	ASQOL	Hip involvement
SPARCC Enthesitis Index
R Value	0.40	0.36	0.42	0.40	0.48	0.17
p Value	<0.001	<0.001	<0.001	<0.001	<0.001	0.02

*Item 4 of the BASDAI is the self-reported item that measures the degree of discomfort from areas tender to touch or pressure.
ASQOL, Ankylosing Spondylitis Quality of Life instrument; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; BASFI, Bath Ankylosing Spondylitis Functional Index.