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Table 4 Types of headaches during seven days before stroke and during seven days before interview in controls

From: Sentinel headache as a warning symptom of ischemic stroke

Type of headachePrevious headache without changes of characteristics in patients with stroke (n = 550)Previous headache without changes of characteristics in controls (n = 192)Р, OR, 95% CIPrevious headache with altered characteristics in patients with stroke
(n = 550)
Previous headache with altered characteristics in controls (n = 192)Р, OR, 95% CINew type of headache in patient with stroke (n = 550)New type of headache in controls (n = 192)P, OR, 95% CI
Migraine without aura1 (0.2%)0 (0%)0.612 (2.2%)0 (0%)0.0820 (3.6%)0 (0%)0.02
Migraine with aura0 (0%)0 (0%)1 (0.2%)0 (0%)0.60 (0%)0 (0%) 
All migraine1 (0.2%)0 (0%)0.613 (2.4%)0 (0%)0.0720 (3.6%)0 (0%)0.02
TTHa12 (2.2%)10 (5.2%)0.0641 (7.5%)2 (1.0%)< 0.001 8.9; 2.1–36.95 (0.9%)0 (0%)0.4
Cluster headache0 (0%)0 (0%)0 (0%)0 (0%)0 (0%)0 (0%) 
Thunderclap headacheN/AbN/A N/AN/A 2 (0.4%)00.9
All headaches13 (2.4%)10 (5.2%)0.0954 (9.8%)2 (1.0%)< 0.001 10.3; 2.5–42.827 (4.9%)0 (0%)0.004
  1. aMigraine with and without aura with altered characteristics and tension headache with altered characteristics, as well as migraines with and without aura and tension headache in the form of a new type of headache, were defined in the text as a migraine-like and tension type-like headache, respectively, since they can be attributed to stroke
  2. bN/A not acceptable
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