Table 1 Specific scoring algorithm for the detection of bacterial and fungal pathogens

Positive for 1 organism

Positive for the identical organism

1 TP

Positive for different organism(s) or negative

1 FN

Positive for 2 organisms

Positive for the 2 identical organisms

1 TP

Positive for only 1 identical organism

0.5 TP and 0.5 FN

Positive for the different organism(s) or negative

1 FN

Positive for 3 organisms

Positive for the 3 identical organisms

1 TP

Positive for only 2 identical organisms

2/3 TP and 1/3 FN

Positive for only 1 identical organism

1/3 TP and 2/3 FN

Positive for the different organism(s) or negative

1 FN

Positive for 4 organisms

Positive for the 4 identical organisms

1 TP

Positive for only 3 identical organisms

3/4 TP and 1/4 FN

Positive for only 2 identical organisms

2/4 TP and 2/4 FN

Positive for only 1 identical organism

1/4 TP and 3/4 FN

Positive for the different organism(s) or negative

1 FN

Negative

Negative

1 TN

Positive for any organism(s)

1 FP