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Table 4 Variables independently and significantly associated with a higher likelihood of suffering migraine among Spanish adults, according to the 2006 Spanish National Health Survey (SNHS)

From: Population-based study of migraine in Spanish adults: relation to socio-demographic factors, lifestyle and co-morbidity with other conditions

Variable Categories Adjusted OR 95% confidence interval
Sex Male 1  
Female 2.14 1.83–2.52
Age 16–30 years 1  
31–50 years 1.22 1.01–1.41
51–70 years 0.61 0.50–0.74
>70 years 0.41 0.32–0.51
Monthly income >1,800 € 1  
1,200–1,800€ 1.09 0.91–1.29
<1,200 € 1.19 1.01–1.41
Self-rated health Excellent/good 1  
Fair/poor/very poor 2.04 1.76–2.36
Sleep habits ≥8 hours/night 1  
<8 hours/night 1.18 1.04–1.33
High blood pressure No 1  
Yes 1.24 1.05–1.47
Cervical pain No 1  
Yes 2.31 1.98–2.68
Low back pain No 1  
Yes 1.33 1.14–1.55
Asthma No 1  
Yes 1.62 1.27–2.05
Depression No 1  
Yes 1.82 1.58–2.11