search for: echocardiogram

...s in R. > > If anyone has nothing better to do than play with other people's data, > I would be happy to send the row files off-list. > > Background: > > I have been given data that contains two measurements of left > ventricular ejection fraction. One of the methods is echocardiogram > which sometimes gives a true quantitative value and other times a > semi-quantitative value. The desire is to compare echo with the > other method (MUGA). In most cases, patients had either quantitative > or semi-quantitative. Same patients had both. The data came > to me in ex...