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*Guest post by Marek Hlavac*

Since its first introduction on this blog, **stargazer**, a package for turning R statistical output into beautiful LaTeX and ASCII text tables, has made a great deal of progress. Compared to available alternatives (such as **apsrtable **or **texreg**), the latest version (4.0) of stargazer supports the broadest range of model objects. In particular, it can create side-by-side regression tables from statistical model objects created by packages **AER**, **betareg**, **dynlm**, **eha**, **ergm**, **gee**, **gmm**, **lme4**, **MASS**, **mgcv**, **nlme**, **nnet**, **ordinal**, **plm**, **pscl**, **quantreg**, **relevent**, **rms**, **robustbase**, **spdep**, **stats**, **survey**, **survival** and **Zelig**. You can install **stargazer** from CRAN in the usual way:

install.packages(“stargazer”) |

### New Features: Text Output and Confidence Intervals

In this blog post, I would like to draw attention to two new features of **stargazer** that make the package even more useful:

**stargazer**can now produce ASCII text output, in addition to LaTeX code. As a result, users can now create beautiful tables that can easily be inserted into Microsoft Word documents, published on websites, or sent via e-mail. Sharing your regression results has never been easier. Users can also use this feature to preview their LaTeX tables before they use the stargazer-generated code in their .tex documents.- In addition to standard errors,
**stargazer**can now report confidence intervals at user-specified confidence levels (with a default of 95 percent). This possibility might be especially appealing to researchers in public health and biostatistics, as the reporting of confidence intervals is very common in these disciplines.

In the reproducible example presented below, I demonstrate these two new features in action.

### Reproducible Example

I begin by creating model objects for two Ordinary Least Squares (OLS) models (using the **lm()** command) and a probit model (using **glm()** ). Note that I use data from **attitude**, one of the standard data frames that should be provided with your installation of R.

## 2 OLS models linear.1 <- lm(rating ~ complaints + privileges + learning + raises + critical, data=attitude) linear.2 <- lm(rating ~ complaints + privileges + learning, data=attitude) ## create an indicator dependent variable, and run a probit model attitude$high.rating <- (attitude$rating > 70) probit.model <- glm(high.rating ~ learning + critical + advance, data=attitude, family = binomial(link = "probit")) |

I then use **stargazer** to create a ‘traditional’ LaTeX table with standard errors. With the sole exception of the argument **no.space **– which I use to save space by removing all empty lines in the table – both the command call and the resulting table should look familiar from earlier versions of the package:

stargazer(linear.1, linear.2, probit.model, title="Regression Results", align=TRUE, dep.var.labels=c("Overall Rating","High Rating"), covariate.labels=c("Handling of Complaints","No Special Privileges", "Opportunity to Learn","Performance-Based Raises","Too Critical","Advancement"), omit.stat=c("LL","ser","f"), no.space=TRUE) |

In the next table, I limit myself to the two linear models, and report 90 percent confidence intervals (using the **ci** and **ci.level** arguments). In addition, I use the argument **single.row** to report the coefficients and confidence intervals on the same row.

stargazer(linear.1, linear.2, title="Regression Results", dep.var.labels=c("Overall Rating","High Rating"), covariate.labels=c("Handling of Complaints","No Special Privileges", "Opportunity to Learn","Performance-Based Raises","Too Critical","Advancement"), omit.stat=c("LL","ser","f"), ci=TRUE, ci.level=0.90, single.row=TRUE) |

To produce ASCII text output, rather than LaTeX code, I can simply set the argument type to “text”:

stargazer(linear.1, linear.2, type="text", title="Regression Results", dep.var.labels=c("Overall Rating","High Rating"), covariate.labels=c("Handling of Complaints","No Special Privileges", "Opportunity to Learn","Performance-Based Raises","Too Critical","Advancement"), omit.stat=c("LL","ser","f"), ci=TRUE, ci.level=0.90, single.row=TRUE) |

### What Else is New?

The two new features that I have focused on in this blog post, of course, do not exhaust the range of innovations that the new **stargazer** brings. The package can now output beautiful LaTeX and ASCII text tables directly into .tex and.txt files, respectively, using the **out** argument.

Additionally, users have a greater scope for making changes to the table’s formatting. A much-demanded addition to version 4.0 concerns column labels. Using arguments **column.labels** and **column.separate**, users can now add a label to each of the columns in their regression table. Such labels can be used to indicate, among other things, the sub-sample or research hypothesis that a particular column refers to. In addition, users can also change the caption above the names of the dependent variables (argument **dep.var.caption**), as well as tinker with the font size in the resulting table (argument **font.size**).

More advanced users can now choose whether the LaTeX table should be enclosed within a floating environment (arguments **float** and **float.env**), and where the resulting table should be placed within the LaTeX document (argument **table.placement**). In this way, they might, for example, create a LaTeX table that is rotated by 90 degrees (when **float.env = “sidewaystable”**).

*Marek Hlavac is a doctoral student in the Political Economy and Government program at Harvard Unviersity. If you have any suggestions for future versions of the stargazer package, please contact him at [email protected] .*

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