Well, something like: LAP <- ifelse(gender =='male', (WC-65)*TG, (WC-58)*TG)
The exact code depends on whether your variables are in a data frame or list or whatever, which you failed to specify. If so, ?with may be useful. Cheers, Bert On Fri, Nov 3, 2023 at 3:43 AM Md. Kamruzzaman <mkzama...@gmail.com> wrote: > Hello Everyone, > I have three variables: Waist circumference (WC), serum triglyceride (TG) > level and gender. Waist circumference and serum triglyceride is numeric and > gender (male and female) is categorical. From these three variables, I want > to calculate the "Lipid Accumulation Product (LAP) Index". The equation to > calculate LAP is different for male and females. I am giving both equations > below. > > LAP for male = (WC-65)*TG > LAP for female = (WC-58)*TG > > My question is 'how can I calculate the LAP and create a single new column? > > Your cooperation will be highly appreciated. > > Thanks in advance. > > With Regards > > *--------------------------------* > > *Md Kamruzzaman* > > *PhD **Research Fellow (**Medicine**)* > Discipline of Medicine and Centre of Research Excellence in Translating > Nutritional Science to Good Health > Adelaide Medical School | Faculty of Health and Medical Sciences > The University of Adelaide > Adelaide SA 5005 > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
