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Trials evaluating patent foramen ovale (PFO) closure for patients with stroke or transient ischemic attack have had varied results. Recent studies show a modest benefit for closure. Since PFO prevalence in the general population is estimated to be 20% to 25%, PFO is not considered causally linked to stroke in some patients. Refining which patients are more likely to have a link between PFO and stroke would be useful. These investigators pooled data from six trials that included 3740 patients (median age, 46 years; 55% men). They compared the stroke rate between patients assigned to medical treatment versus closure. In addition, they calculated treatment implications of a high versus low RoPE score, which assigns points according to stroke c…