Six-month success rates by group.
| Subgroup | SI Joint Fusion | NSM | Rate Difference* |
|---|---|---|---|
| Underlying condition Degenerative sacroiliitis Sacroiliac joint disruption |
70/86 (81.4%, 71.6-89.0%) 13/14 (92.9%, 66.1 - 99.8%) |
10/38 (26.3%, 13.4-43.1%) 1/6 (16.7%, 0.4-64.1% |
54.1 (37.2-69.0%) 68.6 (31.2-93.1%) |
| Prior lumbar fusion Yes No |
33/39 (84.6%, 69.5-94.1%) 50/61 (82.0%, 70.0-90.6%) |
2/17 (11.8%, 1.5-36.4%) 9/27 (33.3%, 16.5-54.0%) |
69.9% (48.0-86.0%) 47.5% (26.9-66.1%) |
| Smoking Current smoker Never smoker Former smoker |
20/25 (80.0%, 59.3-93.2%) 38/45 (84.4%, 70.5-93.5%) 25/30 (83.3%, 65.3-94.4%) |
1/3 (33.3%, 0.8-90.6%) 6/29 (20.7%, 8.0-39.7%) 4/12 (33.3%, 9.9-65.1%) |
41.4% (0-79.3%) 62.0% (42.6-78.2%) 47.6% (17.7-73.4%) |
| Bilateral procedure Yes No |
25/33 (75.8%, 57.7-88.9%) 58/67 (86.6%, 76.0-93.7%) |
2/11 (18.2%, 2.3-51.8%) 9/33 (27.3%, 13.3-45.5%) |
54.2% (24.7-76.8%) 58.1% (40.1-73.8%) |
| Overall | 83/102 (81.4%, 72.4-88.4%) | 11/46 (23.9%, 12.6-38.8%) | 56.6% (41.5-70.0%) |
↵* Point estimate (95% posterior credible interval)