|
Clinical score
|
Probabilities of true bacteremia (%)a
|
Percentage correctly having blood culture(s) (sensitivity)b
|
Percentage correctly rejecting blood culture(s) (specificity)c
|
|---|
|
7.0
|
N/A
|
0
|
100
|
|
6.0
|
N/A
|
0
|
100
|
|
5.5
|
66.7 (2/3)
|
6.1
|
99.7
|
|
5.0
|
38.6 (5/13)
|
15.2
|
97.5
|
|
4.5
|
42.1 (8/19)
|
24.2
|
96.5
|
|
4.0
|
41.2 (14/34)
|
42.4
|
93.7
|
|
3.5
|
32.1 (27/84)
|
81.8
|
82.1
|
|
3.0
|
31.0 (27/87)
|
81.8
|
81.1
|
|
2.5
|
21.6 (30/139)
|
90.9
|
65.7
|
|
2.0d
|
20.7 (31/150)
|
93.9
|
62.6
|
|
1.5
|
17.4 (32/184)
|
97
|
52.2
|
|
1.0
|
11.9 (32/269)
|
97
|
25.5
|
|
0
|
9.4 (33/351)
|
100
|
0
|
- aIndicates the probabilities of true bacteremia in cellulitis cases using the clinical score in that row as a cut-off point to determine whether to order a blood culture. In parenthesis are the number of cellulitis cases with true bacteremia (numerator) and total number of cellulitis cases (denominator) using the clinical score in that row as a cut-off point
- bFraction of patients with true bacteremia who would correctly have blood culture(s) if the clinical score in that row was used as a cut-off point
- cFraction of patients without true bacteremia who would correctly reject blood culture(s) if the clinical score in that row was used as a cut-off point
- dClinical score of 2.0 was used to illustrate its use for decision-making
