Table 2.

Interview schedule guide

Research question	Examples of open questioning
What factors are associated with beliefs underlying fear?	You have said that you worry about the consequences of low back pain—Can you please give me an example of this? Why were you worried? What did you do? Why did you do this? What would you do if you were in a similar situation again? Why would you do this?
	Examples of refined questioning
	Which healthcare professionals have you seen for your back pain? What have they told you about your back pain? Can you tell me about any investigations for example, scans you have had on your back? Where/who else do you turn to for advice on your back pain? Why? Have you been around other people who have had back pain? How did they cope with their pain? Can you tell me about any previous experiences of back pain you may have had?