Table 2.
Headache Features and Characteristics of Respondents with Migraine According to Medication Overuse
| Not Overusing Medication n = 11,542 | Overusing Medication n = 2107 | Total Sample n = 13,649 | Chi | P-value | |
|---|---|---|---|---|---|
| MHDsa (mean ± SD) | 4.3 ± 4.3 | 12.9 ± 8.6 | 5.6 ± 6.0 | 69.7 | < 0.001 |
| MHD category, n (%) | |||||
| 0–4 | 8054 (69.8) | 451 (21.4) | 8505 (62.3) | 2830.498 | < 0.001 |
| 5–9 | 2351 (20.4) | 380 (18.0) | 2731 (20.0) | ||
| 10–14 | 656 (5.7) | 417 (19.8) | 1073 (7.9) | ||
| ≥ 15 | 481 (4.2) | 859 (40.8) | 1340 (9.8) | ||
| Cutaneous allodynia, n (%) | |||||
| No | 7208 (62.5) | 976 (46.3) | 8184 (60.0) | 192.380 | < 0.001 |
| Yes | 4334 (37.5) | 1131 (53.7) | 5465 (40.0) | ||
| MSSSa (scale of 0–21) | 16.4 ± 3.0 | 17.8 ± 2.7 | 16.6 ± 3.0 | 19.433 | < 0.001 |
| Pain intensitya (scale of 0–10) | 6.5 ± 1.6 | 7.4 ± 1.6 | 6.7 ± 1.6 | 22.7 | < 0.001 |
MHD monthly headache day, SD standard deviation, MSSS Migraine Symptom Severity Score
aDetermined by independent-group t test