Table 4.

Predictors for reduced survival (backward Cox regression analysis).

	HR	95% CI	p-Value
Age	1.04	1.03; 1.07	<0.001
Previous cardiac surgery	3.41	1.21; 9.61	0.02
COPD	2.99	1.60; 5.60	0.001
Vegetations	2.17	0.87; 5.18	0.07
Arteriopathy	3.46	1.01; 12.7	0.05
Pathogens
Streptococcus species (ref.)	—	—	—
Coagulase-negative Staphylococcus	0.81	0.30; 2.21	0.8
Enterococcus	0.85	0.24; 3.04	0.8
Gram-positive coccus	1.89	0.41; 8.67	0.4
Polymicrobial	2.76	0.62; 12.18	0.2
Other	1.03	0.51; 2.08	0.9
Staphylococcus aureus	2.66	1.43; 4.91	0.002
Type of surgery (repair vs. replacement)	1.27	0.75; 2.14	0.37

CI = confidence interval. COPD: chronic obstructive pulmonary disease. HR = hazard ratio.