Table 2 Weibull parameter test for spinal stenosis associated with alendronate
PTs | Shape parameter (95% CI) | Scale parameter (95% CI) | Type |
|---|---|---|---|
Lumbar spinal stenosis | 0.76 (0.64–0.88) | 561.96 (409.27–714.64) | Early failure |
Cervical spinal stenosis | 0.98 (0.64–1.31) | 474.14 (261.68–686.60) | Random failure |