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Table 3 Performance characteristics of DC4 and DC-80 in comparison to IC

From: Storage of bronchoalveolar lavage fluid and accuracy of microbiologic diagnostics in the ICU: a prospective observational study

  DC4 (95% CI) DC-80 (95% CI) P value
Sensitivity 96.5% (90.8-98.9) 50.4% (41.0-59.8) <0.00001
Specificity 100% (97.3-100) 100% (97.3-100) 0.99
Positive predictive value 100% (95.8-100) 100% (92.3-100) 0.99
Negative predictive value 97.8% (94.0-99.3) 75.4% (69.3-80.7) <0.0001
  1. DC4, delayed culture after storage at 4°C; DC-80, delayed culture after storage at -80°C; IC, immediate culture; CI, confidence interval.