Table 2.
Prevalence (% [95% confidence interval]) of headache type (N = 3386) by gender and school grade
| Headache type | Total sample | Girls | Boys | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | 5th grade | 7th grade | 9th grade | 11th grade | Total | 5th grade | 7th grade | 9th grade | 11th grade | ||
| UdH | 26.1 [24.6;27.6] | 26.5 [24.5;28.5] | 32.8 [26.8;38.8] | 31.5 [27.1;35.9] | 23.7 [20.4;27.0] | 23.3 [19.8;26.8] | 25.5 [23.3;27.7] | 23.8 [18.6;29.0] | 31.2 [26.8;35.6] | 22.4 [18.5;26.3] | 23.7 [19.4;28.0] |
| All migraine | 24.2 [22.8;25.6] | 28.1 [26.1;30.1] | 18.1 [13.2;23.0] | 23.1 [19.1;27.1] | 31.4 [27.8;35.0] | 32.5 [28.6;36.4] | 19.5 [17.5;21.5] | 17.2 [12.6;21.8] | 21.2 [17.3;25.1] | 18.8 [15.2;22.4] | 19.9 [15.8;24.0] |
| Definite migraine | 6.3 [5.5;7.1] | 6.9 [5.8;8.0] | 10.1 [6.3;13.9] | 5.3 [3.2;7.4] | 5.3 [3.6;7.0] | 8.7 [6.4;11.0] | 5.5 [4.3;6.7] | 10.9 [7.1;14.7] | 4.7 [2.7;6.7] | 4.1 [2.7;6.7] | 4.3 [2.2;6.4] |
| Probable migraine | 18.0 [16.7;19.3] | 21.2 [19.3;23.1] | 8.0 [4.5;11.5] | 17.8 [14.2;21.4] | 26.1 [22.7;29.5] | 23.8 [20.3;27.3] | 14.0 [12.2;15.8] | 6.3 [3.3;9.3] | 16.5 [13.0;20.0] | 14.7 [11.4;18.0] | 15.6 [11.9;19.3] |
| All TTH | 21.6 [20.2;23.0] | 22.4 [20.5;24.3] | 14.3 [9.8;18.8] | 23.1 [19.1;27.1] | 22.0 [18.8;25.2] | 25.6 [22.0;29.2] | 20.7 [18.6;22.8] | 15.6 [11.6;20.1] | 18.1 [14.5;21.7] | 20.4 [16.6;24.2] | 27.4 [22.9;31.9] |
| Definite TTH | 15.1 [13.9;16.3] | 15.2 [13.6;16.8] | 8.4 [4.9;11.9] | 14.4 [11.1;17.7] | 15.0 [12.2;17.8] | 19.0 [15.8;22.2] | 14.9 [13.1;16.7] | 12.9 [8.8;17.0] | 13.7 [10.4;17.0] | 13.1 [10.0;16.2] | 19.9 [15.8;24.0] |
| Probable TTH | 6.5 [5.7;7.3] | 7.2 [6.0;8.4] | 5.9 [2.9;8.9] | 8.8 [6.1;11.5] | 7.0 [5.0;9.0] | 6.6 [4.5;8.7] | 5.7 [4.5;6.9] | 2.7 [0.7;4.7] | 4.4 [2.5;6.3] | 7.2 [4.8;9.6] | 7.5 [4.8;10.2] |
| All H15+ | 3.0 [2.4;3.6] | 4.1 [3.2;5.0] | 4.2 [1.6;6.8] | 3.0 [1.4;4.6] | 5.5 [3.7;7.3] | 3.2 [1.7;4.7] | 1.7 [1.0;2.4] | 0.8 [0.0;1.9] | 1.4 [0.3;2.5] | 2.3 [0.9;3.7] | 1.9 [0.5;3.3] |
| pMOH | 0.9 [0.6;1.2] | 1.0 [0.5;1.5] | 0.4 [0.0;1.2] | 0.5 [0.0;1.2] | 1.2 [0.4;2.0] | 1.4 [0.4;2.4] | 0.9 [0.4;1.4] | 0.8 [0.0;1.9] | 0.5 [0.0;1.2] | 1.4 [0.3;2.5] | 0.8 [0.0;1.7] |
| Other H15+ | 2.0 [1.5;2.5] | 3.0 [2.2;3.8] | 3.8 [1.4;6.2] | 2.5 [1.0;4.0] | 4.2 [2.6;5.8] | 1.8 [0.7;2.9] | 0.8 [0.3;1.3] | 0.0 | 0.9 [0.0;1.8] | 0.9 [0.0;1.8] | 1.1 [0.0;2.2] |
| Unclassifiable | 0.7 [0.4;1.0] | 1.0 [0.5;1.5] | 1.3 [0.0;2.7] | 1.6 [0.4;2.8] | 0.8 [0.1;1.5] | 0.7 [0.0;1.4] | 0.4 [0.1;0.7] | 0.4 [0.0;1.2] | 0.5 [0.0;1.2] | 0.5 [0.0;1.2] | 0.3 [0.0;0.9] |
UdH Undifferentiated headache, TTH Tension-type headache, H15+ Headache on ≥15 days/month, pMOH Probable medication-overuse headache (see text)