Table 1

Working definition of inflammatory back pain

QuestionResponsePoints
Score  =  sum of findings present.
Interpretation: minimum score = 0; maximum score = 5. A score ⩾4 indicates that inflammatory back pain is present.
Age at onset of back discomfort⩾400
<401
OnsetInsidious1
Not insidious0
Persistence of back discomfort (months)<30
⩾31
Associated with morning stiffnessNo0
Yes1
Response to exerciseImproves1
No improvement0