Feature | Missing | All headache | Primary headache | Secondary headache | p value |
---|---|---|---|---|---|
Abnormal medical examination | 5 (3.3%) | 14 (9.6%) | 4 (4.8%) | 10 (15.9%) | 0.025* |
Elevated blood pressure | 5 (3.3%) | 27 (18.5%) | 7 (8.4%) | 20 (31.7%) | 0.000* |
Fever | – | 10 (6.6%) | 1 (1.1%) | 9 (14.1%) | 0.002* |
Abnormal neurological examination | – | 33 (21.9%) | 10 (11.5%) | 23 (35.9%) | 0.000* |
Abnormal neurological examination referable to acute symptoms | – | 26 (17.2%) | 6 (6.9%) | 20 (31.3%) | 0.000* |