Table 1 Characteristics of the patients with MRSA and MSSA infections matched based on specimen type and diagnosis

Number of patients

248

248

Age, median (IQR), years

69 (49,76)

68 (51,78)

n.s.

Male sex, n (%)

166 (68.0%)

152 (61.0%)

n.s.

Categories of summation of the Charlson Comorbidity Index

0, indicating low

73 (29.0%)

65 (26.0%)

n.s.

1 or 2, indicating medium

103 (42.0%)

117 (47.0%)

n.s.

3 or 4, indicating high

54 (22.0%)

51 (21.0%)

n.s.

≥ 5, indicating very high

18 (7.3%)

15 (6.0%)

n.s.

Charlson Comorbidity Index

C1_Myocardial infarction

3 (1.2%)

8 (3.2%)

n.s.

C2_Congestive heart failure

35 (14.0%)

35 (14.0%)

n.s.

C3_Peripheral vascular disease

35 (14.0%)

22 (8.9%)

0.09

C4_Cerebrovascular disease

12 (4.8%)

17 (6.9%)

n.s.

C5_Dementia

5 (2.0%)

7 (2.8%)

n.s.

C6_Chronic pulmonary disease

14 (5.6%)

12 (4.8%)

n.s.

C7_Rheumatic disease

8 (3.2%)

10 (4.0%)

n.s.

C8_Peptic ulcer disease

11 (4.4%)

16 (6.5%)

n.s.

C9_Mild liver disease

8 (3.2%)

13 (5.2%)

n.s.

C10_Diabetes without chronic complication

31 (13.0%)

37 (15.0%)

n.s.

C11_Hemiplegia or paraplegia

2 (0.8%)

0 (0%)

n.s.

C12_Renal disease

34 (14.0%)

19 (7.7%)

0.04

C13_Diabetes with chronic complication

15 (6.0%)

10 (4.0%)

n.s.

C14_Malignancy

65 (26.0%)

67 (27.0%)

n.s.

C15_Leukemia

5 (2.0%)

4 (1.6%)

n.s.

C16_Lymphoma

5 (2.0%)

2 (0.8%)

n.s.

C17_Moderate or severe liver disease

2 (0.8%)

5 (2.0%)

n.s.

C18_Metastatic solid tumor

8 (3.2%)

9 (3.6%)

n.s.

C19_AIDS/HIV

0 (0%)

0 (0%)

n.s.

ICU admission

130 (52.0%)

89 (36.0%)

0.0003

Mechanical ventilation

98 (40.0%)

49 (20.0%)

< 0.00001

HD or HF

31 (13.0%)

10 (4.0%)

0.0009

In-hospital mortality

36 (15.0%)

26 (10.0%)

n.s.

Length of stay, median (IQR), days

44 (26, 81)

34 (15, 61)

0.0001

Hospital charges, median (IQR), US dollars

27,215 (10,038, 65,809)

12,525 (5,722, 26,201)

< 0.00001