Table 2. Summary of data analysis.
| Data analysis Stage | Training | Validation | Combination | Retesting training set | Retesting validation set |
|---|---|---|---|---|---|
| No. of patients |
82 |
89 |
171 |
82 |
89 |
| MS profile no. |
164 |
178 |
342 |
164 |
178 |
| ROC AUC |
0.87 |
0.91 |
0.92 |
0.86 |
0.91 |
| Classification | Sens 75.6% Spec 91.5% | Sens 80.9% Spec 91% | Sens 77.2% Spec 88.9% | Sens 73.2% Spec 87.8% | Sens 80.9% Spec 90.0% |
Abbreviations: AUC=area under the curve; MS=mass spectrometry; ROC=receiver operating characteristic; Sens=sensitivity; Spec=specificity.