Figure 1From: Period prevalence of self-reported headache in the general population in Germany from 1995–2005 and 2009: results from annual nationwide population-based cross-sectional surveys One-year headache prevalence rates (at 95% confidence intervals) in Germany in the years 1995–2005 and 2009. There was no significant change in the headache prevalence over the years (p=0.07). Basic population is the German-speaking population aged 14 years and older.Back to article page