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Table 2 Predicted and observed number of events according to PSI and CURB65 risk category in CAP patients (n = 925)

From: Prohormones for prediction of adverse medical outcome in community-acquired pneumonia and lower respiratory tract infections

PSI class 1 2 3 4 5
Predicted death risk (%)* 0.18% 0.63% 2.74% 8.31% 29.62%
Observed data      
- n 104 139 180 351 151
- Number of deaths 0 (0.0%) 0 (0.0%) 1 (0.6%) 23 (6.6%) 26 (17.2%)
- Number of ICU or death 4 (3.8%) 7 (5.0%) 8 (4.4%) 55 (15.7%) 44 (29.1%)
- Number of serious complications 5(4.8%) 12 (8.6%) 13 (7.2%) 60 (17.1%) 44 (29.1%)
CURB65 score 0 1 2 3 4 or 5
Predicted death risk (%)* 0.58% 1.66% 9.02% 16.11% 35.10%
Observed data      
- n 194 233 296 167 35
- Number of deaths 0 (0.0%) 4 (1.7%) 25 (8.4%) 10 (6.0%) 11 (31.4%)
- Number of ICU or death 6 (3.1%) 19 (8.2%) 44 (14.9%) 31 (18.6%) 18 (51.4%)
- Number of serious complications 7 (3.6%) 30 (12.9%) 46(15.6%) 33(19.8%) 18(51.4%)
  1. * Based on risks reported in the original PSI and CURB65 publications (derivation and validation cohorts) [4, 6].