Graphical display of regression results has become increasingly popular in presentations and in scientific literature because graphs are often much easier to read than tables. Such plots can be produced in Stata by the marginsplot command (see [R] marginsplot). However, while marginsplot is versatile and flexible, it has two major limitations: it can only process results left behind by margins (see [R] margins), and it can handle only one set of results at a time. In this article, I introduce a new command called coefplot that overcomes these limitations. It plots results from any estimation command and combines results from several models into one graph. The default behavior of coefplot is to plot markers for coefficients and horizontal spikes for confidence intervals. However, coefplot can also produce other types of graphs. I illustrate the capabilities of coefplot by using a series of examples.
ClevelandW. S.1994. The Elements of Graphing Data.Rev. ed. Summit, NJ: Hobart.
5.
ClevelandW. S., and McGillR.1985. Graphical perception and graphical methods for analyzing scientific data. Science229: 828–833.
6.
DiceL. R., and LeraasH. J.1936. A graphic method for comparing several sets of measurements. Contributions from the Laboratory of Vertebrate Genetics3: 1–3.
7.
GallupJ. L.2012. A new system for formatting estimation tables. Stata Journal12: 3–28.
8.
GelmanA., PasaricaC., and DodhiaR.2002. Let's practice what we preach: Turning tables into graphs. American Statistician56: 121–130.
9.
GossetW. S. [Student, pseud.] 1927. Errors of routine analysis. Biometrika19: 151–164.
10.
HarrellF. E.Jr.2001. Regression Modeling Strategies: With Applications to Linear Models, Logistic Regression, and Survival Analysis.New York: Springer.
11.
HealyK., and MoodyJ.2014. Data visualization in sociology. Annual Review of Sociology40: 105–128.
12.
JacobyW. G.1997. Statistical Graphics for Univariate and Bivariate Data.Thousand Oaks, CA: Sage.
13.
JannB.2007. Making regression tables simplified. Stata Journal7: 227–244.
14.
KastellecJ. P., and LeoniE. L.2007. Using graphs instead of tables in political science. Perspectives on Politics5: 755–771.
15.
LewandowskyS., and SpenceI.1989. The perception of statistical graphs. Sociological Methods and Research18: 200–242.
16.
NewsonR. B.2003. Confidence intervals and p-values for delivery to the end user. Stata Journal3: 245–269.
17.
TufteE. R.2001. The Visual Display of Quantitative Information. 2nd ed. Cheshire, CT: Graphics Press.
18.
WainerH.1997. Visual Revelations: Graphical Tales of Fate and Deception from Napoleon Bonaparte to Ross Perot.New York: Copernicus.
