Page 44 - Recognizing axial spondyloarthritis - Janneke de Winter
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CHAPTER THREE
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Table 1. Characteristics of the eight included studies.
Name cohort
or author
nr-axSpA AS
Study design
Year of inclusion
Data collection
Maximum disease duration for inclusion years
Mean symptom duration nr-axSpA mean years (SD)
Mean symptom duration AS
GESPIC
226 236
Cohort
2000-2004
Baseline
AS: <10; nr- axSpA <5
2.6 (1.7) 9.4 (9.5)
5.2 (2.3) 12.8 (10.7)
Kiltz
44 56
Cross- sectional
Unknown
N.a.
No
DESIR SCQM
295 180 232 838
Cohort Cohort
2007-2010 2005-2011
Baseline Baseline
<3 No
1.5 (0.9)
1.6 (0.9)
SPACE Esperanza Wallis ESPAC
58 23 182 109 73 639 132 155
Cohort Cohort Cohort Cohort
2009-2014 2008-2011 2003-2012 2009-2014
Baseline Baseline Baseline Unknown
<2 <2 No No
1.1 (0.6) 1.0 (1.6) 12.1 (8.5)* 5.8 (5.5)
1.3 (0.7) 1.2 (0.5) 17.7 (12.3)* 11.7 (7.7)
n n
Nr-axSpA, non-radiographic axial spondyloarthritis; AS, Ankylosing Spondylitis; SD, standard deviation; n.a, not applicable. * Mean disease duration ** Median (interquartile range)
5.5 (1.8- 13.7)**
12.7 (6.4- 22.7)**
mean years (SD)
