Purpose: In order to identify patients likely to present with spinal pain due to Ankylosing Spondylitis.

Stage of CPR Development: Validated.


1. Age at onset < 40 years old
2. Insidious onset
3. Improvement with exercise
4. No improvement with rest
5. Pain at night with improvement on getting up

Interpretation (4+ Variables):

Study Sensitivity Specificity +LR -LR
Sieper et al., 2009 0.77 0.92 9.20 0.25
Sieper et al., 2009 0.80 0.72 2.90 0.28


1. Sieper J, van der Heijde D, Landewé R, et al. New criteria for inflammatory back pain in patients with chronic back pain: a real patient exercise by experts from the Assessment of SpondyloArthritis international Society (ASAS). Ann Rheum Dis. 2009; 68: 784-788. http:// dx.doi.org/10.1136/ard.2008.101501