Hi > [R] Using t tests > > Dear Sir, > > I am doing some work on a population of patients. About half of them are > admitted into hospital with albumin levels less than 33. The other half have > albumin levels greater than 33, so I stratify them into 2 groups, x and y > respectively. > > I suspect that the average length of stay in hospital for the group of > patients (x) with albumin levels less than 33 is greater than those with
> albumin levels greater than 33 (y). > > What command function do I use (assuming that I will be using the chi > square test) to show that the length of stay in hospital of those in group x is > statistically significantly different from those in group y? I am not an expert statistician but you suggested t test which seems to me appropriate. About how to use it see ?t.test Regards Petr > > I look forward to your thoughts. > > Ivo Gwanmesia > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
