Table 2 Baseline demographics, comorbidities and surgical data for reoperation group and non-reoperation groups
From: Incidence and risk factors for early and late reoperation following lumbar fusion surgery
Variables | Non-reoperation | Reoperation | |||
|---|---|---|---|---|---|
Early reoperation | P | Late reoperation | P | ||
Demographic data | |||||
Age (yr) | 64.9 ± 11.1 | 68.1 ± 11.6 | 0.09 | 66.9 ± 9.5 | 0.28 |
Female n (%) | 455 (60.6%) | 21 (60%) | 0.89 | 19 (52.7%) | 0.35 |
Weight (kg) | 68.7 ± 11.5 | 71.2 ± 11.3 | 0.22 | 73.9 ± 11.4 | 0.01 |
BMI (kg/m2) | 25.9 ± 3.6 | 26.3 ± 3.6 | 0.43 | 27.1 ± 3.5 | 0.04 |
Comorbidities n (%) | |||||
Cardiovascular | 401 (49.6%) | 10 (29.4%) | 0.14 | 12 (33.3%) | 0.35 |
Diabetes | 183 (24.4%) | 15 (44.1%) | 0.01 | 7 (19.4%) | 0.50 |
Mental disease | 14 (1.7%) | 1 (2.9%) | 0.65 | 0 | 0.41 |
Digestive disease | 26 (34.6%) | 3 (8.8%) | 0.11 | 3 (8.3%) | 0.13 |
Old cerebral infarction | 21 (2.9%) | 2 (5.9%) | 0.29 | 1 (2.8%) | 0.90 |
Pulmonary diseases | 16 (2.1%) | 2 (5.9%) | 0.15 | 2 (5.5%) | 0.18 |
Osteoporosis | 29 (3.9%) | 5 (14.7%) | 0.01 | 3 (8.3%) | 0.23 |
Surgical history | 274 (36.5%) | 17 (50.0%) | 0.09 | 15 (41.6%) | 0.53 |
Parkinson disease | 9 (1.2%) | 1 (2.9%) | 0.38 | 1 (2.8%) | 0.41 |
Nutrition status | |||||
Albumin (g/L) | 39.5 ± 3.5 | 39.7 ± 4.2 | 0.58 | 40.0 ± 3.6 | 0.30 |
Prealbumin (g/L) | 236.2 ± 54.0 | 243.4 ± 51.4 | 0.45 | 246.3 ± 55.0 | 0.63 |
Hemoglobin (g/L) | 133.7 ± 15.5 | 133.5 ± 15.0 | 0.95 | 136.4 ± 14.5 | 0.24 |
Symptom duration (y) | 6.8 ± 7.7 | 6.6 ± 6.7 | 0.99 | 7.7 ± 8.5 | 0.91 |
Primary diagnosis n (%) | 0.79 | 0.94 | |||
DDD | 184 (24.5%) | 9 (26.4%) | 7 (19.4%) | ||
Lumbar stenosis | 354 (47.1%) | 14 (41.2%) | 18 (50.0%) | ||
Lumbar spondylolisthesis | 213 (28.4%) | 11 (32.4%) | 11 (30.6%) | ||
Surgical data | |||||
ASA | 2.2 ± 0.5 | 2.2 ± 0.4 | 0.70 | 2.4 ± 0.5 | 0.12 |
Operative time (min) | 216.2 ± 70.1 | 247.2 ± 93.8 | 0.01 | 243.2 ± 73.8 | 0.01 |
EBL (ml) | 435.1 ± 343.1 | 501.6 ± 354.2 | 0.27 | 596.1 ± 362.9 | 0.01 |
Fusion level | 0.06 | 0.01 | |||
1–2 | 569 (75.8%) | 21 (61.8%) | 17 (47.2%) | ||
3–5 | 182 (24.2%) | 13 (38.2%) | 19 (52.8%) | ||