Accompanying symptoms | Number of subjects (n) | Headache duration (hours) | P value | |
---|---|---|---|---|
Nausea | Present | 612 | 12 [4–24] | 0.056 |
Absent | 177 | 12 [3–24] | ||
Vomiting | Present | 302 | 19 [6–24] | <0.001 |
Absent | 436 | 12 [3–24] | ||
Phonophobia | Present | 635 | 12 [4–24] | 0.010 |
Absent | 157 | 11 [4–24] | ||
Photophobia | Present | 560 | 12 [4–24] | 0.003 |
Absent | 227 | 10 [3–24] | ||
Dizziness | Present | 116 | 12 [6–24] | 0.148 |
Absent | 545 | 12 [4–24] | ||
Vertigo | Present | 92 | 12 [5–24] | 0.826 |
Absent | 549 | 12 [4–24] | ||
Osmophobia | Present | 127 | 12 [7–24] | 0.219 |
Absent | 111 | 12 [4–24] |