Yes. Of course, Pair() requires the data to be in wide format. It's been a while (although not so long ago as some of the other things I cannot remember...) but I think the reason was that the ...y~g, paired=TRUE... format was considered too brittle with respect to sort order and subsetting.
-pd > On 4 Nov 2025, at 18.40, Ivan Krylov via R-help <[email protected]> wrote: > > В Tue, 4 Nov 2025 11:22:57 -0600 > Robert Baer via R-help <[email protected]> пишет: > >> Errorin t.test.formula(value ~ time, data = data_long, paired = >> TRUE) : >> cannot use 'paired' in formula method > > This was changed in R-4.4.0: > https://bugs.r-project.org/show_bug.cgi?id=14359 > > The news item (see news(grepl('paired', Text))) recommends the use of > Pair(x1, x2) ~ 1 instead of the 'paired' argument. A further fix is > currently in R-devel (but not R-patched): without it, Pair(x1, x2) does > not handle the 'subset' argument. > > -- > Best regards, > Ivan > > ______________________________________________ > [email protected] mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide https://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Office: A 4.23 Email: [email protected] Priv: [email protected] ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide https://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.

