Table 2

Univariate analysis of in-hospital-mortality: patient characteristics and etiology.

Variable

Alive

N = 497

Deaths

N = 208

RR

95% CI

p


Age (years)

Mean ± SD

51.6 ± 17

58.8 ± 16

-

-

<0.001


Gender

Male

345 (71)

141 (29)

1.07

0.76-1.52

0.367

Female

152 (69.4)

67 (30.6)


Period

1984-1995

196 (74.5)

67 (25.5)

1.25

0.97-1.60

0.070

1996-2006

301 (68.1)

141 (31.9)


Hospital

Tertiary

451 (69.3)

200(30.7)

2.07

1.08-3.96

0.008

Community

46 (85.2)

8 (14.8)


Nosocomial

Yes

55 (53.4)

48 (46.6)

1.75

1.37-2.24

<0.001

No

442 (73.4)

160 (26.6)


Comorbidity

Yes

259 (64.4)

143 (35.6)

1.65

1.28-2.13

<0.001

No

238 (78.8)

65 (21.5)


Charlson's index

Mean ± SD

1.56 ±

2,50 ±

<0.001

2.15

2.42


Diabetes mellitus

Yes

24 (68.8)

11 (31.4)

1.06

0.64-1.76

0.464

No

473 (70.6)

197 (29.4)


Chronic renal insufficiency

Yes

14 (58.3)

10 (41.7)

1.43

0.88-2.33

0.184

No

483 (70.9)

198 (29.1)


Chronic liver

Yes

17 (53.1)

15 (46.9)

1.63

1.10-2.40

0.027

Disease

No

480 (71,3)

193 (28,7)


Valve involved

Aortic

223 (71.9)

118 (29.3)

1.02

0.81-1.28

0.456

Mitral

274 (69.3)

90 (29.1)


>1 valve involved

Yes

49 (64.5)

27 (35.5)

1.23

0.89-1.71

0.223

No

448 (71,2)

181 (28,8)


Valve type

Prosthetic

104 (60.8)

67 (39.2)

1.48

1.17-1.87

0.001

Native

393 (73.6)

141 (26.4)


Prosthetic type

Early

33 (47.8)

36 (52.2)

1.93

1.48-2.50

<0.001

Late

464 (73)

172 (27)


S. aureus

Yes

70 (51.1)

67 (48.7)

1.96

1.57-2.46

<0.001

No

427 (75.2)

141 (24.8)


S. viridans group

Yes

140 (89.7)

16 (10.3)

0.29

0.18-0.47

<0.001

No

357 (65)

192 (35)


Coagulase-negative Staphylococci

Yes

64 (62.7)

38 (37.3)

1.32

0.99-1.75

0.040

No

433 (71.8)

170 (28.2)


Enterococcus spp.

Yes

52 (66.7)

26 (33.3)

1.14

0.1-1.60

0.254

No

445 (71)

182 (29)


S. agalactiae

Yes

7 (46.7)

8 (53.3)

1.84

1.12-2.99

0.044

No

490 (71)

200 (29)


Fungal

Yes

2 (22.2)

7 (77.8)

2.69

1.86-3.89

0.004

No

495 (71.1)

301 (28.9)


Data are expressed as number of cases (%) except when indicated.

Gálvez-Acebal et al. BMC Infectious Diseases 2010 10:17   doi:10.1186/1471-2334-10-17

Open Data