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Table 2 Probability of PJP based on CT findings

From: Radiographic features in investigated for Pneumocystis jirovecii pneumonia: a nested case-control study

Finding

Points

Total Score

Probability

Including Radiologist Impression

 Ground glass opacities

5.5

0

< 5%

 Increased interstitial markings

6.5

3

5–10%

 Radiologist Impression

 

5.5

10–15%

  PJP Unlikely or Not Mentioned

0

6.5

15–20%

  PJP possible

3

8.5

20–25%

  PJP likely

10

9.5

25–30%

  

12

35–40%

  

13

40–45%

  

15

50–55%

  

15.5

55–60%

  

16.5

60–65%

  

22

85–90%

Without Radiologist Impression

 Absence of nodular disease

5

≤5

< 5%

 Absence of pleural effusion

5

9

5–10%

 Ground glass opacities

9

10

5–10%

 Increased interstitial markings

10

14

10–15%

  

15

15–20%

  

19

25–30%

  

20

25–30%

  

24

40–45%

  

29

60–65%

  1. To estimate probability, add up the number of points from the two left columns and then look up total score in the third and fourth columns. Provided with or without overall radiologist impression. Probability is based on the pre-test probability in this cohort (11.5%)