Table 5 Multivariate logistic regression. Baseline predictors for different outcomes of secondary chronic headaches after 3 years follow-up
Covariate | No chronic headache | > 25% reduction in headache days | > 25% increase in headache days | Severe disability | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Multivariate (n = 63) | Multivariate (n = 61) | Multivariate (n = 61) | Multivariate (n = 46) | |||||||||||||
N | Odds Ratio | 95% CI | p-value | N | Odds Ratio | 95% CI | p-value | N | Odds Ratio | 95% CI | p-value | N | Odds Ratio | 95% CI | p-value | |
Age | 63 | 1.0 | 0.8–1.2 | 0.8 | 61 | 1.0 | 0.8–1.2 | 0.9 | 61 | 1.0 | 0.8–1.2 | 0.8 | 46 | 1.3 | 1.0–1.8 | 0.1 |
Gender | ||||||||||||||||
Male | 13 | 1.7 | 0.3–11.4 | 0.6 | 12 | 1.3 | 0.2–8.9 | 0.8 | 12 | 0.3 | 0.0–2.6 | 0.3 | 10 | 0.2 | 0.0–10.8 | 0.5 |
Female | 59 | 1 | 49 | 1 | 49 | 1 | 36 | 1 | ||||||||
Headache days last 3 months | ||||||||||||||||
< 80 days | 35 | 11.0 | 1.2–99.7 | 0.03 | 34 | 14.3 | 1.6–127.7 | 0.017 | 34 | 0.0 | 0.0–0.0 | 1.0 | 31 | 0.4 | 0.1–4.2 | 0.5 |
≥ 80 days | 28 | 1 | 27 | 1 | 27 | 1 | 15 | 1 | ||||||||
Type of headache | ||||||||||||||||
HACRS | 28 | 2.6 | 0.5–13.3 | 0.3 | 27 | 2.5 | 0.5–11.9 | 0.3 | 27 | 0.1 | 0.0–0.8 | 0.03 | 26 | 0.1 | 0.0–0.8 | 0.035 |
CPTH/CEH | 35 | 1 | 34 | 1 | 34 | 1 | 20 | 1 | ||||||||
Medication overuse | ||||||||||||||||
No | 32 | 1.6 | 0.3–7.3 | 0.6 | 30 | 1.6 | 0.4–7.0 | 0.5 | 30 | 0.2 | 0.0–1.6 | 0.2 | 24 | 0.1 | 0.0–1.6 | 0.1 |
Yes | 31 | 1 | 31 | 1 | 31 | 1 | 22 | 1 | ||||||||
HSCL-25 defined psychological distress | ||||||||||||||||
No | 34 | 1.8 | 0.4–8.5 | 0.4 | 33 | 1.5 | 0.3–6.2 | 0.6 | 33 | 0.6 | 0.1–2.9 | 0.5 | 25 | 0.7 | 0.1–6.5 | 0.8 |
Yes | 29 | 1 | 28 | 1 | 28 | 1 | 21 | 1 | ||||||||
Disability grade | ||||||||||||||||
No to moderate | 21 | 3.6 | 0.9–14.3 | 0.04 | 20 | 1.3 | 0.3–5.1 | 0.7 | 20 | 1.4 | 0.3–6.8 | 0.6 | 18 | 0.0 | 0.0–0.0 | 1.0 |
Severe | 42 | 1 | 41 | 1 | 41 | 1 | 28 | 1 | ||||||||