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Table 1 Sensitivity, Specificity, Positive Predictive Value and Negative Predictive Value of PCT with the [95% CI]

From: Can procalcitonin measurement help the diagnosis of osteomyelitis and septic arthritis? A prospective trial

Groups Sensitivity Specificity PPV NPV
1 vs 3 25 [3.2-65.1] 96.9 [94.2-98.6] 18.2 [2.3-51.8] 97.9 [95.5-99.2]
1+2 vs 3 12.5 [4.7-25.2] 96.9 [94.2-98.6] 40 [16.3-67.7] 87 [82.9-90.5]
1+2 vs 3 (fever) 20.7 [3.8-43.2] 86.3 [82.3-90.2] 50 [18.9-65.4] 62.3 [31.2-82.3]
1+2 vs 3 (osteomyelitis) 20 [3.7-41.6] 96.9 [94.2-98.6] 30.7 [13.7-48.9] 94.6 [91.2-97.5]
1+2 vs 3 (septic arthritis) 7.1 [4.8-19.5] 96.9 [94.2-98.6] 18.1 [4.138.6] 91.5 [87.4-94.3]