Seems that my students and I are not the only ones who are occasionally baffled by Stata’s margins command, which does all sorts of amazing things. Margins is incredibly powerful, and the accompanying marginsplot command almost always does just the right thing. These commands come with excellent documentation, but at a mere 58 pages (not…
The Stata idiom capture quietly makes it so that any output from the subsequent command is suppressed, and that even critical failures are happily ignored. Your script soldiers on, and you are none the wiser. I always thought that this is a wonderful metaphor for organisational behaviour. In unrelated news, every other summer, Statacorp comes…
A year ago, I wrote a slightly maudlin blog about the good and the not-so-good reasons for solo-blogging in this time and age. Good reasons or not, I kept up the good work with 35 blogs in 2018. That is a bit less than my long-term annual average, but Chapeau to my good self nonetheless.…
This is me, about once per year, when I bemoan my lack of R-coolness whilst simultaneously enjoying my Stata-efficiency.
Personal blogs are so 1990s, yes? This is not the late 1990s. Hey, it’s not even the early Naughties, and has not been for a while. I have had my own tiny corner of the Internet (then hosted on university Web space as it was the norm in the day) since Mosaic came under pressure…
Here is an update on our work on surveybias. How can we usefully summarise the accuracy of an election opinion poll compared to the real result of an election? In this blog, we describe a score we have devised to allow people to see how different polls compare in their reflection of the final election…
Just how badly biased is your pre-election survey? Once the election results are in, our scalar measures B and B_w provide convenient, single number summaries. Our surveybias add-on for Stata will calculate these and other measures from either raw data or from published margins. Its latest iteration (version 1.4) has just appeared on SSC. Surveybias…
In der letzten Woche ist meine Einführung zum Thema Strukturgleichungsmodelle bei Springer/VS erschienen. Das Buch zeigt, wie sich die gängigsten Modelle (u.a. einfache und Mehr-Gruppen-Konfirmatorische-Faktorenanalysen (CFA/MGCFA)) in Stata, Lisrel und MPlus realisieren lassen. Die Beispiele stammen aus dem Bereich der politikwissenschaftlichen Einstellungsforschung (Fremdenfeindlichkeit, politische Entfremdung, politisches Interesse …). Alle Beispieldateien können hier heruntergeladen werden. Das…
Worried about survey bias? We have updated our add-on (or ado) surveybias, which calculates our multinomial generalisation of the old Martin, Traugott, and Kennedy (2005) measure for survey bias. If you have any dichotomous or multinomial variable in your survey whose true distribution is known (e.g. from the census, electoral counts, or other official data),…
Meet one reviewer from hell. Or perhaps not