These is essentially a statistical question, which are generally consider off topic here. So you may not get a satisfactory reply.
stats.stackexchange.com is probably a better venue for your post. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Fri, May 4, 2018 at 8:20 AM, Allaisone 1 <allaiso...@hotmail.com> wrote: > > Hi all , > > > I have a dataframe (Hypertension) with following headers :- > > >> Hypertension > > ID Hypertension(before drug A) Hypertension(On drug A) On drug > B? Healthy diet? > > 1 160 90 > True True > > 2 190 140 > False False > > 3 170 > 110 True False > > > I wanted to study whether patients on drug A + on drug B + on healthy diet > would have better > > blood pressure control (reduction) compared to patients with drug A but not > on drug B or not on healthy diet or not on both. > > > I considered my outcome(y) variable to be hypertension measurements for all > patients > > on drug A (column 2). Columns 1,3 and 4 are my explanatory(x) variables > variables(column 1 is just the baseline measurements to adjust for the effect > of drug A compared to the baseline) . So my regression formula using lm() > function in R is as follow :- > > > Regression <- lm (formula= Hypertension(On drug A)~Hypertension(before drug > A) + > > (On drug B?*Healthy diet?)) , data = Hypertension) > > > I expect that the result of "(On drug B?*Healthy diet?)" coefficient in the > model would give the correct answer to my question. > > Is this the best formula to answer my question or there would be better > methods ?. > > > Regards > > > > > [[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. ______________________________________________ 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.
