Group | Work Days Missed Due to Migrainea | Household Activity Days Missed Due to Migrainea | ||
---|---|---|---|---|
 | Mean (SE) | P valueb | Mean (SE) | P valueb |
Preventive naive (n = 500) | 4.3 (0.6) |  < 0.001 | 10.6 (0.8) |  < 0.001 |
0–1 preventive failures (n = 308) | 7.0 (1.0) | 0.281 | 12.0 (1.0) | 0.043 |
 ≥ 2 preventive failures (n = 298) | 7.8 (1.1) | –– | 14.3 (1.2) | –– |