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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%)
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