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

Stage of CPR Development: Validated.

Tests:

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

Research:

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