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Table 4 Percentage of students with no headache, mild, moderate and severe headaches as the highest intensity score recorded across the 3-week diary period by sex, grade, and school location

From: Headache prevalence and characteristics among school children as assessed by prospective paper diary recordings

  No headache Mildb Moderatec Severed
(n = 61) (n = 93) (n = 94) (n = 171)
All 14.5 22.5 22.3 40.7
Sex
 Boys 19.7 25.0 19.7 35.6
 Girls 9.3 20.0 24.9 45.9
Grades
 6 15.3 21.6 21.6 41.4
 7 13.9 20.8 18.1 47.2
 8 17.9 24.4 26.9 30.8
 9 14.5 27.3 18.2 40.0
 11a 8.3 10.4 33.3 47.9
School location
 City 12.1 23.0 25.4 39.5
 Town 18.1 21.1 18.1 42.7
  1. aSecond grade in high school
  2. bRaw intensity score of 1–2
  3. cRaw intensity score of 3
  4. dRaw intensity score of 4–5