Ankylosing Spondylitis (Berlin Criteria)

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

Stage of CPR Development: Validated.

Tests:

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

Interpretation:

Study	Sensitivity	Specificity	+LR	-LR
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