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Table 1: 
Patient demographics
≤6 Weeks6–24 Weeks>24 WeeksP
No. of patients and levels15312444
Age (yr) (mean) (SD, range)76 (10.2, 41–95)74 (11.7, 44–96)67 (16.1, 31–89)<.0001
Female63%72%57%.14
Preoperative pain length, (mean) (SD)3.3 (1.7)12.9 (4.8)41.1 (21.8)<.0001
Most frequently treated levelL1L1L1.21a
Incident fracture rate within 1 year follow-up14%21%12%.13
  • 


    ↵a Comparison of all levels in each group of patients.