Base Case Values.
| Treatments | |||
|---|---|---|---|
| CC | Spacer | DS | |
| Variable | Base Case | Base Case | Base Case |
| Failure rate, quarterly | 4.3% | 2.7% | 1.2% |
| 1 Level | NA | 50.0% | 50.0% |
| 2 Levels | NA | 50.0% | 50.0% |
| Adverse event* | NA | 0.0% | 5.4% |
| Inpatient rehabilitation | NA | 0.0% | 3.9% |
| Fusion, secondary treatmentx | 31% | ||
| Probability of utilization - Qtr of Procedure | |||
| Healthcare | NA | 45.2% | 76.2% |
| Medications | NA | 94.4% | 94.4% |
| Diagnostics | NA | 22.2% | 22.2% |
| Probability of utilization - FU Quarters | |||
| Healthcare | 94.0% | 13.1% | 12.9% |
| Medications | 100.0% | 64.3% | 64.3% |
| Diagnostics | 86.0% | 8.8% | 8.8% |
| Costs | |||
| Procedure | |||
| 1 Level | $7,367 | $7,883 | |
| 2 Levels | $7,683 | $8,155 | |
| 1 Level, fusionx | NA | $26,118 | |
| 2 Levels, fusionx | NA | $27,662 | |
| Anesthesiology | NA | $386 | $454/$567# |
| Inpatient rehabilitation | NA | NA | $9,100 |
| Qtr of Procedure | |||
| Healthcare | $662 | $774 | |
| Medications | $334 | $334 | |
| Diagnostics | $333 | $333 | |
| FU Quarters | |||
| Healthcare | $289 | $665 | $1,060 |
| Medications | $498 | $337 | $337 |
| Diagnostics | $162 | $870 | $870 |
| Adverse Event | NA | $6,770 | |
| QALY gained‡ | |||
| Baseline to 3 mo | 0.008 | 0.111 | 0.091 |
| 3 mo - 6 mo | 0.016 | 0.144 | 0.173 |
| 6 mo - 9 mo | 0.016 | 0.144 | 0.162 |
| 9 mo - 12 mo | 0.016 | 0.144 | 0.155 |
| After 12 mo | 0.016 | 0.144 | 0.151 |
↵* Adverse Events (AE) that generate additional reimbursement outside of the global payment. Healthcare includes non-surgeon physician visits, physical therapy, chiropractic care, acupuncture. Medications include narcotics, muscle relaxants, NSAIDs, and oral steroids. Diagnostics include MRI scans, CT scans, x-rays, spine injections, and EMGs. Superion patients assumed to have the same level of utilization for non-surgeon physician visits, medications, and diagnostics as decompressive surgery patients.
↵x DS with fusion was received by a portion of patients after DS or Spacer failure.
↵# Anesthesiology rate for DS without fusion / Anesthesiology rate for DS with fusion.
↵‡ QALY gained is an annual amount; one-fourth of the value is accumulated each quarter.