Table 3.
Inputs and ranges for all parameters in the cost-effectiveness model at 4 year follow-up
| Base casea | Rangeb | ||
|---|---|---|---|
| Low | High | ||
| Cumulative 4 year probabilitiesa | |||
| Probability of treatment success | |||
| Coblation | 0.86 | 0.79 | 0.93 |
| MSD | 0.52 | 0.28 | 0.76 |
| Probability of revision (1-treatment success) | |||
| Coblation | 0.14 | 0.07 | 0.21 |
| MSD | 0.48 | 0.24 | 0.72 |
| Probability of revision procedures with Coblation | |||
| Osteotomy | 0.50 | 0.25 | 0.75 |
| Revision arthroscopy | 0.25 | 0.13 | 0.38 |
| Total knee replacement | 0.25 | 0.13 | 0.38 |
| Probability of revision procedure with MSD | |||
| Osteotomy | 0.29 | 0.15 | 0.44 |
| Revision arthroscopy | 0.14 | 0.07 | 0.21 |
| Total knee replacement | 0.57 | 0.29 | 0.86 |
| Number of physical therapy sessions usedb | |||
| Coblation | 6.4 | 4.8 | 8.0 |
| MSD | 9.8 | 9.2 | 10.4 |
| Costs, 2018 (US$)c | |||
| Primary knee chondroplasty | 3207 | ||
| Physical therapy session | 82 | – | – |
| 4 year revision procedures | |||
| Osteotomy | 5855 | – | – |
| Revision arthroscopy | 2935 | – | – |
| Total knee replacement | 10,553 | – | – |
MSD mechanical shaver debridement
aBased on published results of the randomized clinical trial [25]
bBase case revision probabilities were varied by 50%, except for number of physical therapy sessions which were based on randomized clinical trial [5]
cBased on 2018 US Medicare Physician Fee Schedule [27]