Statistical analysis: It will look for differences in bivariate analysis, and multivariate = logistic regression (dependent variable = treatment decision, the independent variables = number of charts, period for risk assessment (one or 5 years), prescription target (patient or the physician himself), CHA2DS2-VASC score, time from graduation, medical/teaching grade, working in hospital / ambulatory, the size of the city the physician works in, specialty, gender, age, if the physician has/had someone close with stroke (data from questionnaires).