Table 5.
Classes of medications taken by the 132 patients for prophylactic treatment and comparison between chronic and episodic headache patients (some patients took more than one preventive drug)
| Therapeutic class | Total (n = 132), n (%) | Episodic headache (n = 55), n (%) | Chronic headache (n = 77), n (%) | OR [95% CI]a | P valueb |
|---|---|---|---|---|---|
| Antidepressants | 102/132 (77.3) | 41/55 (74.6) | 61/77 (79.2) | 1.30 [0.57–2.97] | 0.5290 |
| Antiepileptics | 29/132 (22.0) | 7/55 (12.7) | 22/77 (28.6) | 2.74 [1.06–7.13] | 0.0308 |
| Beta-blocking agents | 12/132 (9.1) | 5/55 (9.1) | 7/77 (9.1) | 1.00 [0.30–3.35] | 1.0000 |
| Calcium channel blockers | 9/132 (6.8) | 5/55 (9.1) | 4/77 (5.2) | 0.55 [0.14–2.16] | 0.3831 |
CI confidence interval, OR odds ratio
achronic vs episodic headache OR
bp value is derived from a Chi square test for homogeneity of odds