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Table 5 Family history of headaches in the case and control groups

From: Headache in Behcet’s disease: types and characteristics

	Family history, n		Odds ratio	95 % CI	P value
	Positive	Negative	Odds ratio	95 % CI	P value
Case
Headache +	28	92	1.86	1.03–3.34	0.037
Headache −	27	165	1.86	1.03–3.34	0.037
Control
Headache +	18	41	2.54	1.32–4.88	0.004
Headache −	38	220	2.54	1.32–4.88	0.004

CI: confidence interval

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