TABLE 1.
Efficacy characteristics of MRSA nares screening for diabetic foot infections
| Screening parameter |
No. of isolates |
% sensitivity | % specificity | PPV | NPV |
|---|---|---|---|---|---|
| Whole cohort | 8,163 | 50.2 | 89 | 48.7 | 89.6 |
| Deep culture | 5,499 | 48.8 | 89.2 | 48.7 | 89.2 |
| Superficial culture | 2,664 | 53.2 | 88.6 | 48.7 | 90.3 |
| Northeast | 1,190 | 53.4 | 89.6 | 53.7 | 89.5 |
| South | 2,727 | 50.4 | 87.4 | 46.4 | 89.0 |
| Midwest | 1,658 | 54.1 | 91.9 | 57.8 | 90.8 |
| West | 2,588 | 45.7 | 88.6 | 43.6 | 89.4 |
| 2007–2012 | 2,947 | 53.4 | 86.4 | 44.5 | 90.1 |
| 2013–2018 | 5,216 | 48.5 | 90.5 | 51.7 | 89.3 |
| Culture from foot | 5,563 | 51.2 | 88.2 | 47.4 | 89.7 |
| Culture from toe | 2,600 | 48.2 | 90.7 | 51.9 | 89.4 |
| Duplicates removed | 5,403 | 51.8 | 90.0 | 51.0 | 90.3 |