Table 5

qSOFA: screening performance characteristics for intensive care unit at 72 hours

CriteriaSensitivity % (95% CI)Specificity % (95% CI)Negative predictive value % (95% CI)Negative likelihood ratio (95% CI)Positive predictive value % (95% CI)Positive likelihood ratio (95% CI)
qSOFA ≥1
TP=430
TN=1840
FP=1410
FN=63
87.2 (83.9 to 90.0)56.6 (54.9 to 58.3)96.7 (95.8 to 97.4)0.23 (0.18 to 0.28)23.4 (21.5 to 25.4)2.0 (1.9 to 2.1)
qSOFA ≥2
TP=268
TN=2892
FP=358
FN=225
54.4 (49.8 to 58.8)89.0 (87.8 to 90.0)92.8 (91.8 to 93.7)0.51 (0.47 to 0.56)42.8 (38.9 to 46.8)4.9 (4.3 to 5.6)
qSOFA ≥3
TP=87
TN=3191
FP=59
FN=406
17.6 (14.4 to 21.4)98.2 (97.6 to 98.6)88.7 (87.6 to 89.7)0.84 (0.81 to 0.87)59.6 (51.1 to 67.5)9.7 (7.1 to 13.3)
  • qSOFA, quick sequential organ failure assessment; TP, true positive; TN, true negative; FP, false positive; FN, false negative.