Chronic Low Back Pain with and without Concomitant Osteoarthritis: A Retrospective, Longitudinal Cohort Study of Patients in England

Figure 1

Study design. ^†Latest available linked data at time of analysis. ^‡Can start prior to the indexing and/or study period, but must start after the first LBP diagnosis code and continue into the indexing period. LBP, lower back pain; OA, osteoarthritis.