Reoperations among patients in Ontario who underwent surgery for degenerative disease of the lumbar spine between Apr. 1, 1995, and Dec. 31, 2001, by demographics and surgeon factors
| Characteristics | Reoperation; no. (%)* | |||
|---|---|---|---|---|
| 6 weeks | 1 year | 2 years | Overall | |
| No. of patients | 36 (0.6) | 142 (2.3) | 297 (4.9) | 649 (10.6) |
| Age, mean (range) yr | 66 (50–81) | 67 (50–87) | 67 (50–87) | 66 (50–87) |
| Female sex | 20 (0.6) | 77 (2.3) | 165 (4.9) | 354 (10.5) |
| Male sex | 16 (0.6) | 65 (2.4) | 132 (4.8) | 295 (10.7) |
| Charlson = 0 | 24 (0.5) | 108 (2.4) | 227 (5.1) | 506 (11.3) |
| Charlson ≥ 1 | 12 (0.7) | 34 (2.0) | 70 (4.2) | 143 (8.6) |
| Index operation | ||||
| Decompression | 23 (0.6) | 108 (2.6) | 223 (5.3) | 449 (10.7) |
| Fusion | 13 (0.7) | 34 (1.8) | 74 (3.8) | 200 (10.4) |
| Surgeon volume | ||||
| Low volume | 9 (0.4) | 56 (2.4) | 120 (5.2) | 255 (11.1) |
| High volume | 27 (0.7) | 86 (2.2) | 177 (4.6) | 394 (10.3) |
| Surgeon specialty | ||||
| Neurosurgery | 12 (0.5) | 73 (2.7) | 134 (5.0) | 279 (10.4) |
| Orthopedic surgery | 24 (0.7) | 69 (2.0) | 163 (4.7) | 370 (10.8) |
↵* Unless otherwise indicated.