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Table 1 Patient and infection characteristics

From: Epidemiology and outcome of Staphylococcus aureus bloodstream infection and sepsis in a Norwegian county 1996–2011: an observational study

Characteristic

N (%)

Patients included

373 (100)

Sex

 

Female

148 (39.7)

Male

225 (60.3)

Acquisition

 

Community-acquired

108 (29.0)

Healthcare-associated

156 (41.8)

Hospital-acquired

109 (29.2)

Age category

 

<60

81 (21.7)

60-69

58 (15.6)

70-79

109 (29.2)

≥80

125 (33.5)

Comorbid conditions

 

No underlying illness

20 (5.4)

Malignancy

96 (25.7)

Renal failure

45 (12.1)

Diabetes mellitus

72 (19.3)

Hypertension

114 (30.6)

Cardiovascular disease

154 (41.3)

Heart failure

40 (10.7)

Chronic pulmonary disease

62 (16.6)

Rheumatic disease

39 (10.5)

Charlson Comorbidity Index (CCI)

 

0

85 (22.8)

1-2

160 (42.9)

≥3

128 (34.3)

Focus of infection

 

Unknown

94 (25.2)

Respiratory focus

37 (9.9)

Urinary tract

33 (8.8)

Skin/soft tissue

73 (19.6)

Abscess

27 (7.2)

IV catheter

28 (7.5)

Endocarditis

18 (4.8)

Osteomyelitis/Septic arthritis

44 (11.8)

Other*

19 (5.1)

Microbiological characteristics

 

Polymicrobial infection

25 (6.7)

Methicillin-resistant isolates

3 (0.8)

Penicillin-sensitive isolates§

93 (26.7)

Dicloxacillin-sensitive isolates§

346 (99.4)

Gentamicin-sensitive isolates§$

323 (98.5)

Gentamicin intermediate or resistant§$

5 (1.5)

Time period

 

1996-2003

144 (38.6)

2004-2011

229 (61.4)

  1. *Other focus includes dental foci, parotitis, 2 cases of meningitis, mediastinits, an infected peritoneal dialysis catheter and one probable intravascular graft infection.
  2. §assessed for monomicrobial episodes, n = 348.
  3. $Data lacking for 20 isolates (5.7%).