Prevalence of primary headache disorders in a population aged 60 years and older in a rural area of Northern China

Table 1 Sex-, age- and education-specific 1-year prevalence of headache types (%)

	N^a	All primary headache			TTH			MIG			UNC			CH
	N^a	No cases	Prev^b(%)	95 % CI^c	No cases	Prev (%)	95 % CI	No cases	Prev^b(%)	95 % CI	No cases	Prev (%)	95 % CI	No cases	Prev (%)	95 % CI
Total	5038	519	10.30	9.46–11.14	102	2.02	1.64–2.41	43	0.85	0.60–1.11	183	3.63	3.12–4.15	191	3.79	3.26–4.32
Gender
Male	2366	125	5.28	4.38–6.18	33	1.39	0.92–1.87	5	0.21	0.03–0.40	41	1.73	1.21–2.26	46	1.94	1.39–2.50
Female	2671	394	14.75	13.41–16.10	69	2.58	1.98–3.18	38	1.42	0.97–1.87	142	5.32	4.47–6.17	145	5.4	4.57–6.29
Age (years)
60–69	2531	290	11.46	10.22–12.70	56	2.21	1.64–2.79	29	1.15	1.54–2.65	91	3.60	2.87–4.32	114	4.5	3.70–5.31
70–79	1632	158	9.68	8.25–11.12	33	2.02	1.34–2.71	8	0.49	0.15–0.83	61	3.74	2.82–4.66	56	3.43	2.82–4.66
80+	875	71	8.11	6.30–9.92	13	1.49	0.68–2.29	6	0.69	0.14–1.23	31	3.54	2.32–4.77	21	2.40	1.39–3.41
Education
Illiterate	2028	225	11.09	9.73–12.46	32	1.55	1.04–2.12	19	0.94	0.52–1.36	88	4.34	3.43–5.23	86	4.24	3.36–5.12
≤ 5 years	1394	151	10.8	9.20–12.46	19	1.36	0.75–1.97	14	1.00	0.48–1.53	66	4.73	3.62–5.85	52	3.73	2.74–4.73
> 5 years	1616	143	8.85	7.46–10.23	51	3.16	2.30–4.01	10	0.62	0.24–1.00	29	1.79	1.15–2.44	53	3.30	2.41–4.15

^a N number of individuals included in analysis, TTH tension-type headaches, MIG migraines, CH chronic headache (headache ≥15 days/month), UNC unclassified headaches, ^b Prev prevalence of headache, ^cCI: confidence interval

ISSN: 1129-2377