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Table 2 Course of headache types and transition between each headache type in 12- to 14-year-old adolescents (n = 44 subjects)

From: Course of adolescent headache: 4-year annual face-to-face follow-up study

  1. TTH tension type headache
  2. p = 0.01 compared to first year; ** p = 0.02 compared to second year; *** p = 0.02 compared to third year;  p = 0.02 compared to the reference study. All others not significant