Table 1 Interview guide (generic)

Core questions

● Information and icebreaking

● Description of the patient pathway for patients with back pain

● Description of the complexity and variation in pathways for patients with back pain

● Description of the ideal patient pathway for patients with back pain

● Discussion of challenges regarding diagnosis, treatment and care for patients with back pain

● How do you think a nationwide cohort could contribute to the patient pathway for patients with back pain?

● Which information do you consider essential for a nationwide cohort for patients with back pain, and how should this information be collected?

● Q/A, debriefing and summing up