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Kaplan–Meier survival curve shows the results of analysis of pain recurrence rate (Y-axis) for patients with LBP treated with FJI during 6-month of follow-up (X-axis). The curve indicates that 71.4% of the patients with PCS < 5 remains pain-free after the FJI in comparison to 13.6% of patients showing elevated levels of catastrophizing symptoms (PCS ≥ 5), p < 0.0001 by log-rank test.
