Table 4 Validity of SCF mRNA expression for discrimination of patients from control, atopic patients from non-atopic patients and severe asthmatic patients from mild asthmatic patients
Sensetivity | Specificity | Positive predictive value (PPV) | Negative predictive value (NPV) | Accuracy | |
|---|---|---|---|---|---|
SCF mRNA expression at cut off point (0.528) for discrimination of patients from control. | 92% | 84.6% | 90.1% | 86.2% | 88.7% |
SCF mRNA expression at cut off point (1.84) for discrimination of atopic patients from non-atopic patients. | 80.0% | 81.2% | 86.9% | 70.5% | 80% |
SCF mRNA expression at cut off point (1.395) for discrimination of severe asthmatic patients from mild asthmatic patients. | 96% | 80% | 88.9% | 92.3% | 90% |