Table 1.
Characteristics of the 384 included patients
| Characteristic | No. (%) |
|---|---|
| Age (years) | 51; SD 15 |
| Male sex | 150 (39.1%) |
| Duration to presentation (days ave) | 2.4; SD 4.9 |
| Headache location | |
| Halfsided | 30 (7.8%) |
| Whole head | 161 (41.6%) |
| Localized | 193 (50.3%) |
| Nausea | 97 (25.1%) |
| Vomiting | 186 (48.4%) |
| Neurological examination | |
| Normal | 129 (33.6%) |
| Abnormal | 255 (66.4%) |
| Subjective deficit | 97 (25.3%) |
| Motor lateralization | 42 (10.9%) |
| Sensory lateralization | 29 (7.5%) |
| Papillary edema | 6 (0.1%) |
| Abnormal pupils | 23 (5.9%) |
| Nuchal rigidity | 44 (11.5%) |
| NCCT | |
| Normal | 190 (49.4%) |
| SAH | 128 (33.1%) |
| Intraparenchymal hemorrhage | 32 (8.3%) |
| Ischemia | 11 (2.8%) |
| Space occupying lesion | 10 (2.6%) |
| Sinusitis | 7 (1.8%) |
| SDH | 2 (0.5%) |
| Other | 4 (1%) |
| CTA | |
| Normal | 256 (66.7%) |
| Aneurysm | 103 (26.8%) |
| CVT | 6 (1.6%) |
| AVM | 7 (1.8%) |
| Dissection | 5 (1.3%) |
| Ischemia | 3 (0.7%) |
| RCVS | 2 (0.5%) |
| AV fistula | 2 (0.5%) |
| LP | |
| Not performed | 287 (74.7%) |
| Normal | 69 (18%) |
| Hemorrhage | 14 (3.6%) |
| Meningitis | 10 (2.6%) |
| Raised pressure | 4 (1%) |
AVM, arterio‐venous malformation; CTA, CT angiography; CVT, cerebral venous thrombosis; LP, lumbar puncture; NCCT, non contrast CT; RCVS, reversible cerebral vasoconstriction syndrome; SAH, subarachnoid hemorrhage; SDH, subdural hematoma.