Hi Trying to work out that: Each person can take from 1 to 9 drugs. And data frame looks like
id drug 1 d 2 g 2 d 2 r 3 e 3 a ........... Q: How many drugs one person takes on average? Thank you ______________________________________________ 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.
