Table 1

Prevalence (%) of active headache disorder by type, age (mid-range values of studies) and gender

Gender/age (years)	Headache			Migraine			TTH			H15+
	N	Mean (median)	95% CI	N	Mean (median)	95% CI	N	Mean (median)	95% CI	N	Mean (median)	95% CI
Both genders
0–9	10	42.7	30.6–55.4	12	5.0	3.6–6.5	4	5.9	1.3–12.8	0	–	–
10–19	60	57.9	52.0–63.9	61	13.4	11.4–15.6	40	25.1	18.8–31.6	14	3.3	2.3–4.0
20–64	107	50.2	46.0–54.8	165	15.2	13.8–16.6	65	27.6	24.0–31.3	43	5.1	4.2–6.2
≥ 65	6	40.2	30.0–50.6	6	7.9	4.9–10.3	1	32.2	–	2	4.2
All ages	183	52.0 (53.5)	48.9–55.4	244	14.0 (11.6)	12.9–15.2	110	26.0 (21.4)	22.7–29.5	59	4.6 (3.6)	3.9–5.5
Males
0–9	2	40.4	–	11	4.7	3.3–6.1	4	5.4	–	0	–	–
10–19	39	51.4	43.8–58.6	36	10.2	8.4–12.2	16	25.5	16.2–35.5	6	1.4	0.7–2.2
20–64	71	41.8	36.5–47.6	128	8.7	7.6–9.8	43	24.2	18. 7–30.0	33	3.2	2.4–4.3
≥ 65	5	27.8	–	5	4.5	–	1	28.1	–	2	2.2	–
All ages	117	44.4 (46.2)	40.3–48.3	180	8.6 (7.4)	7.8–9.5	64	23.4 (17.9)	19.4–28.0	41	2.9 (1.9)	2.2–3.8
Females
0–9	2	41.5	–	11	5.6	3.9–7.3	4	6.4	–	0	–	–
10–19	38	62.3	55.0–69.0	37	15.3	12.7–18.1	17	27.1	17.7–37.2	6	3.1	1.4–4.7
20–64	74	56.5	51.4–61.4	131	18.6	17.0–20.5	44	28.8	23.2–35.4	33	6.6	5.2–8.0
≥ 65	5	50.4	–	5	10.6	–	1	36.3	–	2	5.8	–
All ages	119	57.8 (60.0)	53.9–61.7	184	17.0 (15.5)	15.6–18.5	66	27.1 (21.0)	22.7–32.3	41	6.0 (5.2)	4.9–7.4

N number of studies, TTH tension-type headache, H15+ headache on ≥15 days/month, CI confidence interval (not given when N ≤ 5), SD standard deviation