Table 2 Demographics and clinical characteristics of patients with MRSA BSI with and without nasal colonization

Sex

 Male

3.47 (1.02–11.82)

0.05

5.06 (1.64–22.01)

 Female

Reference

Reference

Race/ethnicity

 Non-hispanic white

Reference

 Non-hispanic black

1.48 (0.34–6.43)

0.60

 Hispanic/latino

1.19 (0.29–4.81)

0.81

 Asian

–

–

 Other/not reported

–

–

Age at time of infection

 18–54 years

Reference

 55–69 years

0.44 (0.08–2.60)

0.37

 ≥ 70 years

0.19 (0.03–1.11)

0.06

History of IV drug use

 Yes

0.86 (0.07–10.19)

0.90

 No

Reference

HIV diagnosis

 Yes

–

–

 No

–

–

Admission source

 Home

Reference

 NH/Rehab/LTACH

2.96 (0.56–15.63)

0.20

Other hospital

2.96 (0.31–28.14)

0.35

Prior hospital admission (90 days)

 Yes

3.94 (1.15–13.52)

0.03

3.96 (1.01–15.56)

 No

Reference

Reference

Length of hospital stay prior to BSI

 CO-MRSA

Reference

 HO-MRSA

1.42 (0.43–4.71)

0.57

Clonal complex

 CC8

Reference

 CC5

2.63 (0.72–9.66)

0.15

 Other

1.73 (0.27–10.97)

0.56

Frequent healthcare interaction

 Hemodialysis

8.00 (0.92–69.84)

0.06

 Infusion Center

1.56 (0.33–7.24)

0.57

 None

Reference

Presence of invasive device

 Yes

2.57 (0.70–9.48)

0.16

 No

Reference

Invasive procedures

 Yes

1.63 (0.44–6.07)

0.47

 No

Reference

Wound present

 Yes

2.19 (0.66–7.29)

0.20

 No

Reference

Charlson comorbidity index (CCI)

 0–3

Reference

Reference

 4–5

3.75 (0.66–21.25)

0.14

7.44 (0.95–58.45)

 6–8

4.69 (0.84–26.08)

0.08

7.84 (1.03–59.84)

 > 8

2.50 (0.37–16.89)

0.35

3.68 (0.44–30.88)

History of transplant

 Yes

2.90 (0.32–26.33)

0.34

 No

Reference

History of MRSA colonization

 Yes

4.26 (0.84–21.60)

0.08

 No

Reference

Presumed source of MRSA BSI

 Peripheral IV

1.09 (0.19–6.33)

0.92

 Skin and soft tissue infection

0.70 (0.17–2.84)

0.62

 Pneumonia

1.32 (0.13–13.78)

0.81

 Diabetic foot infection

–

–

 Vascular access

1.83 (0.43–7.74)

0.41

 Sacral wound

0.40 (0.05–3.13)

0.38

 Other/unknown

0.83 (0.21–3.28)

0.79