Table 4.
Main statistical parameters related to VOCs selected by the final predictive model to discriminate between 65 subjects with pancreatic ductal adenocarcinoma (PDA) and 102 controls (data in ppb)
| Ammonia | M34 | M43 | M44 | M62 | Sulfur dioxide | M71 | M74 | M89 | M112 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Control subjects | ||||||||||
| Median | 91.0 | 19.4 | 1025.7 | 7220.3 | 7.3 | 11.0 | 31.9 | 7.9 | 1.3 | 8.9 |
| Geometrical Mean | 88.8 | 18.7 | 1023.9 | 6576.8 | 7.5 | 10.4 | 36.1 | 9.4 | 1.5 | 9.6 |
| Minimum value | 13.8 | 9.4 | 288.8 | 2879.3 | 2.3 | 4.9 | 12.5 | 2.2 | 0.1 | 2.8 |
| Maximum value | 459.6 | 29.5 | 2697.8 | 14,011.8 | 41.7 | 14.5 | 186.9 | 383.5 | 15.2 | 152.6 |
| Arithmetic mean | 106.5 | 19.2 | 1087.5 | 6918.8 | 8.7 | 10.6 | 44.5 | 17.4 | 2.2 | 12.0 |
| Standard deviation | 72.9 | 4.0 | 397.8 | 2115.9 | 5.7 | 2.0 | 36.1 | 41.7 | 2.5 | 15.4 |
| Patients with PDA | ||||||||||
| Median | 106.7 | 12.4 | 1195.7 | 6106.7 | 5.7 | 6.0 | 42.2 | 8.4 | 3.5 | 14.0 |
| Geometrical Mean | 118.2 | 12.8 | 1337.8 | 6141.6 | 6.3 | 6.9 | 41.2 | 9.6 | 3.4 | 14.5 |
| Minimum value | 33.4 | 8.5 | 402.4 | 3521.3 | 1.9 | 3.1 | 15.4 | 1.9 | 0.3 | 6.1 |
| Maximum value | 737.0 | 30.4 | 13,697.7 | 10,436.8 | 33.1 | 16.7 | 179.1 | 130.9 | 42.1 | 71.4 |
| Arithmetic mean | 136.7 | 13.3 | 1874.4 | 6371.2 | 7.7 | 7.7 | 49.4 | 16.2 | 5.7 | 16.7 |
| Standard deviation | 102.8 | 4.4 | 2109.5 | 1749.0 | 6.0 | 3.6 | 34.5 | 22.5 | 6.9 | 10.9 |