|
MRSA score (0 to 8)
|
Sensitivity
|
Specificity
|
Positive predictive value
|
Negative predictive value
|
Overall prevalence of patients with the score value or higher in the validation set
|
|---|
|
2
|
95.2%
|
7.7%
|
35.3%
|
75.3%
|
93.3%
|
|
3
|
80.2%
|
30.9%
|
38.0%
|
74.7%
|
72.9%
|
|
4**
|
61.6%
|
58.6%
|
44.0%
|
74.3%
|
48.4%
|
|
5*
|
44.8%
|
75.9%
|
49.6%
|
72.3%
|
31.2%
|
|
6
|
17.0%
|
90.4%
|
48.3%
|
67.4%
|
12.2%
|
|
7 or 8
|
2.8%
|
99.4%
|
70.0%
|
65.9%
|
1.4%
|
|
HCA risk factors
|
32.0%
|
64.5%
|
32.3%
|
64.3%
|
34.3%
|
- *MRSA score of 5 or higher is superior to HCA risk factors on all classification metrics.
- **MRSA Score of 4 or higher is superior to HCA risk factors on all metrics but specificity.
- MRSA=methicillin-resistant S. aureus; HCA=healthcare associated.
