Table 11. Variables and coefficients of the logistic regression model built with directly or indirectly calibrated VOCs, with outcome variable: Patients with inflammatory bowel disease vs. controls (surgical and gastroenterological).
| Variables | Estimate | Std. Error | 95% CI |
|---|---|---|---|
| (Intercept) | -2.616 | 1.848 | -4.499–0.702 |
| Age | 4.491e-01 | 8.989e-02 | 0.3.04–0.551 |
| Methane | -7.421e-01 | 1.380 | -3.952–0.000 |
| Acetonitrile | -4.356e-03 | 4.598e-03 | -0.012–0.000 |
| Nitrous Oxide | 1.589e-04 | 2.466e-04 | -0.000–0.000 |
| Nitrous Acid | -3.073e-01 | 5.877e-02 | -0.363 –-0.208 |
| Acetic Acid | 1.254e-03 | 4.640e-04 | 0.000–0.002 |
| Ammonia | 1.379e-03 | 9.499e-04 | 0.000–0.002 |
| Ethylene | -6.212e-03 | 9.546e-03 | -0.025–0.002 |
| Acetaldehyde | 1.480e-03 | 9.375e-04 | 0.000–0.003 |
| Acetone | 4.226e-04 | 5.043e-04 | 0.000–0.002 |
| Isoprene | -6.135e-03 | 2.162e-03 | -0.009 –-0.003 |
| Toluene | 1.207e-01 | 8.372e-02 | 0.000–0.225 |
| n-Heptane | 8.734e-03 | 2.090e-02 | 0.000–0.061 |