Table 5. Odds ratios of patients to controls for subscale total scores by binary and multiple logistic regression analyses and area under the ROC curve.
| Odds ratio one-point increase (95% CI) |
P-value | Area under ROC curve (95% CI) |
|
|---|---|---|---|
| Single scale | |||
| Q1 Chemical Intolerances | 1.054 (1.044–1.065) | <0.001*** | 0.842 (0.800–0.883) |
| Q2 Other Intolerances | 1.096 (1.075–1.117) | <0.001*** | 0.821 (0.777–0.865) |
| Q3 Symptom Severity | 1.096 (1.079–1.114) | <0.001*** | 0.904 (0.872–0.936) |
| Q5 Life Impacts | 1.126 (1.102–1.150) | <0.001*** | 0.946 (0.920–0.972) |
| Q4 Masking Index (total) (rev.)a | 1.322 (1.163–1.503) | <0.001*** | 0.629 (0.567–0.690) |
| Masking-I (rev.)a | 2.274 (1.883–2.746) | <0.001*** | 0.771 (0.721–0.822) |
| Masking-II | 4.797 (3.353–6.864) | <0.001*** | 0.742 (0.688–0.796) |
| Multiple scalesb | |||
| Q1 Chemical Intolerances | 1.036 (1.011–1.062) | 0.005** | 0.961 (0.942–0.979) |
| Q2 Other Intolerances | 0.966 (0.928–1.005) | 0.089 | |
| Q3 Symptom Severity | 1.039 (1.013–1.066) | 0.003** | |
| Q5 Life Impacts | 1.085 (1.057–1.113) | <0.001*** | |
| Masking-II | 2.700 (1.537–4.744) | <0.001*** | |
| Q1 Chemical Intolerances × Masking-I | 0.991 (0.984–0.998) | 0.007** |
aScores were reversed.
bExcluded variables; Masking-I
Wald test; significant at **p < 0.01, ***p < 0.001. ROC, receiver operating characteristic; CI, confidence interval; rev., reversed