Table 4.
Risk factors for infection.
| Risk factor | Case | Control | p |
|---|---|---|---|
| Female gender | 27 (35%) | 25 (32%) | 0.73 |
| Myocardial infarction | 1 (1%) | 1 (1%) | 1 |
| Cardiac dysthymia | 1 (1%) | 5 (6%) | 0.096 |
| Atrial fibrillation | 0 (0%) | 2 (3%) | 0.15 |
| Atrial flutter | 0 (0%) | 1 (1%) | 0.32 |
| Congestive heart failure | 2 (3%) | 1 (1%) | 0.56 |
| Heart block | 0 (0%) | 1 (1%) | 0.32 |
| Cerebrovascular disease | 1 (1%) | 0 (0%) | 0.32 |
| Bleeding disorder | 1 (1%) | 0 (0%) | 0.32 |
| Chronic obstructive pulmonary disease | 0 (0%) | 1 14%) | 0.32 |
| Emphysema | 0 (0%) | 0 (0%) | 1 |
| Past smoker | 3 (4%) | 2 (3%) | 0.65 |
| Renal insufficiency | 1 (1%) | 1 (1%) | 1 |
| Dialysis dependent | 0 (0%) | 0 (0%) | 1 |
| Cancer | 1 (1%) | 1 (1%) | 1 |
| Diabetes | 9 (12%) | 3 (4%) | 0.071 |
| Current smoker | 10 (13%) | 10 (13%) | 0.97 |
| Intraoperative cardiovascular event | 1 (1%) | 0 (0%) | 0.32 |
| Intraoperative respiratory event | 1 (1%) | 0 (0%) | 0.32 |
| General anesthesia | 76 (97%) | 78 (100%) | 0.15 |
| Postoperative stay | 3.5 (3.1) | 3.6 (3.6) | 0.9 |