Comparison of VAS scores and time off-work according to the types of migraine
| Headache impact metrics | Migraine types | P | |
|---|---|---|---|
| Episodic migraine< 15 days (n = 110) | Chronic migraine≥ 15 days (n = 97) | ||
| Mean ± SD (median) | Mean ± SD (median) | ||
| Migraine VAS | 9.18 ± 1.27 (10) | 9.54 ± 0.69 (10) | 0.258 |
| Time off-work (days) | 3.98 ± 2.49 (3) | 7.36 ± 3.28 (7) | 0.001** |
VAS: visual analog scale. Mann Whitney U test indicates statistically significant differences, **: P < 0.01