Table 3.
Headache diagnoses by school grade among pupils (both genders) reporting headache during the preceding year
| Headache type | Proportions of those with any headache (N = 2562) | |||
|---|---|---|---|---|
| 5th grade (n = 317) | 7th grade (n = 669) | 9th grade (n = 822) | 11th grade (n = 754) | |
| UdH | 44.2%a | 40.5%a | 30.8%b | 29.2%b |
| All migraine | 27.4%a | 28.5%a | 34.6%a | 34.2%a |
| Definite migraine | 16.4%a | 6.4%b | 6.3%b | 8.6%b |
| Probable migraine | 11.0%a | 22.1%b | 28.3%c | 25.6%b,c |
| All TTH | 23.3%a | 26.7%a,b | 28.3%a,b | 32.6%b |
| Definite TTH | 16.7%a,b | 18.2%b | 18.9%a,b | 24.0%a |
| Probable TTH | 6.6%a | 8.5%a | 9.4%a | 8.6%a |
| All H15+ | 3.7%a | 2.8%a | 5.5%a | 3.4%a |
| pMOH | 0.9%a | 0.6%a | 1.7%a | 1.5%a |
| Other H15+ | 2.8%a | 2.2%a | 3.8%a | 1.9%a |
| Unclassifiable | 1.3%a | 1.3%a | 0.9%a | 0.7%a |
UdH Undifferentiated headache, TTH Tension-type headache, H15+ Headache on ≥15 days/month, pMOH probable medication-overuse headache (see text); a,b,c These superscript notations indicate groups differing (p < 0.05) on Tukey post-hoc analyses