Table 4.
Multivariate logistic model evaluating independent variables associated with the presence of chronic migraine.
| Variable | Estimate | OR | LCI | UCI | p-value |
|---|---|---|---|---|---|
| Intercept | −2.114 | 0.121 | 0.078 | 0.182 | <0.001 |
| MOH | 4.581 | 97.569 | 51.202 | 208.174 | <0.001 |
| Duration of migraine [years] | 0.031 | 1.031 | 1.010 | 1.053 | 0.003 |
| Migraine with aura: Visual | −0.489 | 0.613 | 0.299 | 1.177 | 0.160 |
| Migraine with aura: Complex | −2.122 | 0.120 | 0.017 | 0.575 | 0.020 |
| Hashimoto’s thyroiditis | 0.568 | 1.764 | 0.949 | 3.186 | 0.045 |
| Acute medication used/overused – Codeine | 0.510 | 1.665 | 0.925 | 2.925 | 0.082 |
MOH, medication overuse headache.