Fig. 1From: Description of recurrent headaches in 7–14-year-old children: Baseline data from a randomized clinical trial on effectiveness of chiropractic spinal manipulation in children with recurrent headachesMigraine-tension-type index. Footnote: The severity score was computed as 0.527 * intensity + 0.477 * duration + 0.433 * medication + 0.554 * sick days after rescaling the single variables to mean 0 and standard deviation 1Back to article page