Purpose: In order to identify patients likely to present with spinal pain due to Ankylosing Spondylitis.
Stage of CPR Development: Validated.
1. Morning stiffness > 30 min
2. Improvement in back pain with exercise but not with rest
3. Awakening because of back pain during the second half of the night only
4. Alternating buttock pain
|Rudwaleit et al., 2006||0.70||0.81||3.70||0.40|
|Sieper et al., 2009||0.84||0.63||2.20||0.26|
|Sieper et al., 2009||0.70||0.81||3.80||0.37|
|Chan et al., 2012||0.92||0.67||2.80||0.12|