From: “Pointing forehead”: a new physical sign in migraine
Sign positive group
Sign negative group
t value
Significance (p value)
Sign A
26.37 (±2.36)
21.09 (±1.44)
2.026
0.044
Sign B
22.14 (±1.65)
23.65 (±1.83)
0.593
0.553