Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 3 Descriptive baseline comparisons of high (I–II) and low (III–IV) complication groups by Clavien–Dindo classification
From: Influence of perioperative complication severity on 1- and 2-year outcomes of low back surgery
Mean (SD)/frequency/category for CD Grade I–II | Mean (SD)/frequency/category for CD Grade III–IV | P value | |
|---|---|---|---|
Age | 58.3 (13.9) | 60.0 (12.9) | 0.26 |
Gender | 53 F 42 M 24 Not reported | 215 F 139 M 12 Not reported | 0.38 |
Body mass index | 28.8 (6.3) | 29.8 (6.2) | 0.21 |
Baseline pain score | 7.1 (2.5) | 7.2 (2.4) | 0.58 |
Baseline ODI score | 47.9 (16.4) | 51.4 (13.6) | 0.04 |
Baseline SF-36 PCS score | 30.7 (8.9) | 27.6 (6.4) | <0.01 |
Baseline SF-36 MCS score | 41.7 (12.3) | 37.7 (14.1) | <0.01 |
Levels of surgery | 1.6 (1.0) | 2.7 (1.3) | <0.01 |
Number of patients with prior surgery | 29 Y 90 N | 73 Y 285 N | 0.36 |
1-year VAS percent change | 25 Y 23 N | 123 Y 110 N | 0.92 |
2-year VAS percent change | 18 Y 8 N | 75 Y 72 N | 0.03 |
1-year ODI percent change | 25 Y 26 N | 121 Y 124 N | 0.96 |
2-year ODI percent change | 21 Y 13 N | 78 Y 103 N | 0.04 |