Table 6 PPV for “any GAS”, “any bacteria”, and “only viruses” at different levels of CRP (n = 111)

≥ 0

111

25

86

0.23 (0.23–0.23)

41

70

0.37 (0.37–0.37)

31

80

0.28 (0.28–0.28)

≥ 10

61

20

41

0.33 (0.27–0.40)

32

29

0.52 (0.44–0.60)

21

40

0.34 (0.27–0.42)

≥ 20

50

19

31

0.38 (0.30–0.47)

27

23

0.54 (0.44–0.64)

10

40

0.20 (0.13–0.30)

≥ 30

34

15

19

0.44 (0.32–0.57)

19

15

0.56 (0.42–0.69)

4

30

0.12 (0.05–0.26)

≥ 40

26

13

13

0.50 (0.35–0.65)

16

10

0.62 (0.45–0.76)

1

25

0.04 (0.006–0.22)

≥ 50

22

11

11

0.50 (0.33–0.67)

14

8

0.64 (0.45–0.79)

1

21

0.05 (0.007–0.25)

…

≥ 100

10

6

4

0.60 (0.31–0.83)

7

3

0.70 (0.39–0.90)

-

10

-