Table 1 Items in the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), scored on a numerical rating scale [17]

How would you describe the overall level of fatigue/tiredness you have experienced?

How would you describe the overall level of ankylosing spondylitis neck, back or hip pain you have had?

How would you describe the overall level of pain/swelling in joints other than neck, back or hips you have had?

How would you describe the overall level of discomfort you have had from any areas tender to touch or pressure?

How would you describe the overall level of morning stiffness you have had from the time you wake up?

How long does your morning stiffness last from the time you wake up?