Table 2. Cohort-specific post-operative complication rates. Cognitively impaired patients had a higher incidence of delirium, wound infections, urinary tract infections and pneumonia.
| Variables | Cognitively impaired (n=57) | Non-impaired (n=25) | P value | |
|---|---|---|---|---|
| Operative | ||||
| Intra-operative durotomy (%) | 7.00 | 8.00 | 0.88 | |
| Nerve root injury (%) | 0.00 | 0.00 | 1.00 | |
| Spinal cord injury (%) | 0.00 | 0.00 | 1.00 | |
| Post-operative | ||||
| Delirium (%) | 19.29 | 8.00 | 0.01 | |
| Ileus (%) | 7.01 | 8.00 | 0.88 | |
| Pneumonia (%) | 8.77 | 0.00 | 0.02 | |
| UTI (%) | 6.00 | 0.00 | 0.01 | |
| DVT (%) | 1.75 | 0.00 | 0.32 | |
| PE (%) | 0.00 | 1.00 | 0.32 | |
| Hematoma (%) | 0.00 | 0.00 | 0.99 | |
| Sensorimotor deficits (%) | 1.75 | 4.00 | 0.61 | |
| MI (%) | 0.00 | 0.00 | 0.99 | |
| At least one complication (%) | 39.00 | 20.00 | 0.15 | |
Values given as mean ± standard deviation. UTI, urinary tract infection; DVT, deep vein thrombosis; PE, pulmonary embolism; MI, myocardial infarction.