Table 2.
Clinical prediction criteria associated with increased risk of IE in patients with MRSA bacteremia
| Prediction criterion | All patients (n = 398) | Without IE (n = 354) | With IE (n = 44) | P-value | Odds ratio | Odds ratio 95 % confidence limits |
|
|---|---|---|---|---|---|---|---|
| Prolonged bacteremia | 269 (67.5 %) | 232 (65.5 %) | 37 (84.1 %) | 0.167 | 2.131 | 0.729 | 6.229 |
| Intravenous drug use | 85 (21.3 %) | 53 (15 %) | 32 (72.7 %) | <0.001* | 14.951 | 5.356 | 41.734 |
| Implantable catheter | 60 (15 %) | 57 (16.1 %) | 3 (6.8 %) | 0.387 | 3.441 | 0.209 | 56.657 |
| Intracardiac device | 19 (4.7 %) | 18 (5.1 %) | 1 (2.3 %) | 0.384 | 0.280 | 0.016 | 4.917 |
| Prosthetic valve | 19 (4.7 %) | 7 (2 %) | 6 (13.6 %) | 0.002* | 13.086 | 2.529 | 67.704 |
| Hemodialysis | 90 (22.6 %) | 86 (24.3 %) | 4 (9.1 %) | 0.122 | 0.068 | 0.002 | 2.040 |
| Osteomyelitis | 52 (13 %) | 46 (13 %) | 6 (13.6 %) | 0.067 | 0.287 | 0.076 | 1.089 |
| Previous IE | 19 (4.7 %%) | 10 (2.8 %) | 9 (20.5 %) | 0.117 | 2.849 | 0.769 | 10.554 |
| Cardio-structural abnormality | 13 (3.2 %) | 9 (2.5 %) | 4 (9.1 %) | 0.035* | 6.095 | 1.132 | 32.833 |
*Statistically significant, P < 0.05