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Figure 2 Trends for age-adjusted prevalence of atrial fibrillation in 1,871 patients with ischemic stroke and their age- and gender-matched controls, stratified by gender. *Significant (p = 0.001) time trend among case patients; insignificant (p = 0.702) difference between men and women. Significant (p < 0.001) time trend among controls; insignificant (p = 0.098) difference between men and women.