To the Editor Fisher and colleagues1 conducted an evaluation of factors affecting the preventability of stroke, with special reference to treatment and comorbidity. Preventability of the presenting stroke was scored and univariate analysis was selected for the limited number of patients. I have some queries on their study approach.
First, the procedure for scoring preventability of stroke was not described precisely, although this score was the most important indicator in their study.1 In addition, the category of each comorbid disease, such as hypertension, dyslipidemia, atrial fibrillation, and vascular history, did not adhere to the standard criteria. I feel that the empirical method is not suitable for scientific research, and the difference in the prevalence of each comorbid disease should be considered in their analysis to determine factors for the preventability of stroke.
Kawada T. Factors Affecting the Preventability of Stroke. JAMA Neurol. 2016;73(7):890. doi:10.1001/jamaneurol.2016.1025