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Table 2 Classification accuracy of Martin and colleagues’ criteria in detecting community-acquired sepsis events, stratified by infection category [3 ]

From: Discharge diagnoses versus medical record review in the identification of community-acquired sepsis

Diagnostic property Lung ( n = 166) Kidney ( n = 59) Abdominal ( n = 73) Skin ( n = 49) Other ( n = 32) Overall ( n = 379)
Sensitivity (%) 18.8 (10.9 to 29.0) 44.4 (25.5 to 64.7) 4.4 (0.11 to 21.9) 40.0 (12.2 to 73.8) 68.8 (41.3 to 89.0) 27.6 (20.7 to 35.3)
Specificity (%) 98.8 (93.7 to 100.0) 90.6 (75.0 to 98.0) 98.0 (89.4 to 99.9) 94.9 (82.7 to 99.4) 68.8 (41.3 to 89.0) 94.6 (90.8 to 97.2)
Positive predictive value (%) 93.8 (69.8 to 99.8) 80.0 (51.9 to 95.7) 50.0 (1.3 to 98.7) 66.7 (22.3 to 95.7) 68.8 (41.3 to 89.0) 78.2 (65.0 to 88.2)
Negative predictive value (%) 56.7 (48.3 to 64.7) 65.9 (50.1 to 79.5) 69.0 (56.9 to 79.5) 86.0 (72.1 to 94.7) 68.8 (41.3 to 89.0) 65.1 (59.7 to 70.3)
Likelihood ratio positive 16.1 (2.2 to 119.0) 4.7 (1.5 to 15.1) 2.2 (0.1 to 33.2) 7.8 (1.7 to 36.7) 2.2 (0.99 to 9.9) 5.1 (2.8 to 9.4)
Likelihood ratio negative 0.82 (0.74 to 0.92) 0.61 (0.43 to 0.88) 0.98 (0.89 to 1.07) 0.63 (0.38 to 1.05) 0.46 (0.21 to 1.01) 0.77 (0.69 to 0.85)
Area under ROC curve 0.59 (0.54 to 0.63) 0.68 (0.57 to 0.78) 0.51 (0.47 to 0.56) 0.67 (0.51 to 0.84) 0.69 (0.41 to 0.89) 0.61 (0.57 to 0.65)
  1. Data presented as mean (95% confidence interval). ROC, receiver operating characteristics.