Analysis of refractures within 1 year
| Percentage of Patients Having a Second Treatment Session Within 1 y of Initial Procedure | Percentage of Refractured Patients Having a Third Treatment Session Within 1 y of Initial Procedure | Average Available Cement Volumes for Patients Refracuring Within 1 y of Initial Procedure (cc) | Average Time Between Treatment Sessions for Refracturing Patients Within 1 y of Initial Procedures | ||||||
|---|---|---|---|---|---|---|---|---|---|
| No. of Patients Having Initial Procedure | No. Refractured (2nd Procedure) | % Refracturing | No. Refractured (2nd Procedure) | No. Refractured (3rd Procedure) | % of Refractured Patients Having 3rd Procedure | Δt Between 1st and 2nd procedure wk | Δt Between 2nd and 3rd procedure wk | ||
| Primary osteoporosis | 350 | 72 | 20.6 | 72 | 23 | 31.9% | 5.18 ± 2.58 | 11.3 | 12 |
| Steroid-induced osteoporosis | 37 | 14 | 37.8 | 14 | 6 | 42.9% | 5.97 ± 3.02 | 7.93 | 10.8 |
| Total | 387 | 86 | 22.2 | 86 | 29 | 33.7% | |||
| Relative risk | 1.84 | 1.34† | |||||||
| P value | .0163 | .3094 | |||||||
* Chi-squared analysis.
† Fisher exact test.