Fig. 2From: Post-traumatic headache in patients with minimal traumatic intracranial hemorrhage after traumatic brain injury: a retrospective matched case-control studyMean numeric rating scale (NRS) scores of both groups. The difference in NRS scores between mTIH groups and non-mTIH group was statistically significant (95% confidence interval, 0.11 to 1.14; p < 0.05, ANCOVA)Back to article page