A normal and particularly small left atrial size measured during echocardiography MAY NOT suggest low likelihood of moderate or severe left ventricular systolic dysfunction

This is letter to the editor: we point to a statistical error in a recent article published in the journal by Movahed MR, Soltani Moghadam A. A normal and particularly small (<35 mm) left atrial size measured during echocardiography suggests low likelihood of moderate or severe left ventricular systolic dysfunction, which may have resulted in a biased conclusion.