stata commands with examples

We may also wish to create a table to compare the results of several regression models. However, Stata 13 introduced a new teffects command for estimating treatments effects in a variety of ways, including propensity score matching. The first command assigns a value of '.' to the new variable. The -local- command is a way of defining macro in Stata. To carry out the examples in this section, you'll need to have created an SFS folder and downloaded the gss_sample data set as described in Managing Stata Files . A do file lists and executes Stata commands. . sysuse auto //, clear. . As an example, if we have data on weight and mileage of 22 foreign and 52 domestic automobiles, we may wish to fit a logit model explaining whether a car is foreign or not on the basis of its weight and mileage. Bootstrapping: STATA versions 11 and up have added a bootstrap wrapper command that works with most of the standard commands. Stata Setup in Stata. 0000006855 00000 n I’ll show you how to use collect to customize the appearance of your tables in my next post. the command gmm estimates parameters by GMM you can specify the moment conditions as substitutable expressions a substitutable expression in Stata is like any mathematical 2 The Stata Environment When you start Stata, you will see the following windows: the Command window where you type in your Stata commands, the . 0000005108 00000 n Use display command to show the iterator value at each step in the loop foreach x in|of [ local, global, varlist, newlist, numlist ] {Stata commands referring to `x' } list types: objects over which the commands will be repeated forvalues i = 10(10)50 {display `i'} numeric values over which loop will run iterator Additional programming resources Useful Commands in Stata Stata command for descriptive statistics tables. This will be especially true once you become familiar with the commands you use the most in your daily use of Stata. . For example, we use the sum command to find summary statistics of all numeric variables in the dataset. The order of the variables in the parentheses determines the nesting structure in the table. In the examples below, the basic Stata commands are in bold and you type them into the command window. Statato store the commands and output of Stata sessions, the equivalent does not exist in R. A more savvy version in Ris to create a R-markdown file to capture code and output. 0000006435 00000 n ): . . Creating a "Do" File in Stata This set of notes describes how to create a "do" file within the computer program Stata. The local can then be addressed by `lname'in the commands. %PDF-1.3 %���� Example 6: Writing a matrix to Excel. Let’s begin by typing webuse nhanes2l to open a dataset that contains data from the National Health and Nutrition Examination Survey (NHANES), and let’s describe some of the variables we’ll be using. We use the NLS data which is based on the National Longitudinal Survey of Young Women 14-26 years of age in 1968. 0000001259 00000 n I'm currently looking at a longitudinal data set filled with economic . This style changed the appearance of the row labels. Stata is a software package popular in the social sciences for manipulating and summarizing data and conducting statistical analyses. 0000000940 00000 n We covered this before, but you will use it a lot with panels. stream We will ignore the survey weights for now so that we can focus on the syntax for creating tables. It is assumed the reader is using version 11, although this is generally not necessary to follow the . . Convenience. For example,the following command has both types of options. so long as you are using the same method for all regressions. The table below displays the odds ratio, standard error, z score, p-value, and 95% confidence interval for each covariate in our final model. • Look at the correlations of the estimated coefficients (not the variables). . The first set of empty parentheses is necessary in this example so that table knows that highbp is a column variable. are set in italics while built-in Stata functions and operators are upright. A scalar is given by a 1 1 matrix. 1. You can apply them to several variables at once, even all the variables in the dataset. }�>��9}u���LRk@�+��FPm&��s�H|-��ߚR��T��rl޻�M���m�*��]�?l�L� replace price2 = price*price. The postfile commands are a suite of commands designed to post results in Stata. webuse auto.dta 4.2.1 Creating a copy of data Today, I'm going to begin a series of blog posts about customizable tables in Stata 17. 0000030803 00000 n 84 0 obj For example: generate price2 = . The example below displays frequencies for categories of sex nested within categories of highbp. For example a = 2 Note: standard Stata matrix commands distinguish between scalars and 1 1 matrices. Stata may also be used in a command-line environment on a Basic syntax and usage. 56 3.2 Repeating similar commands . Always add a space before the double forward slash, otherwise Stata treats them as part of the command and attempts to (unsuccessfully) execute them. Stata 17 offers a new and exciting way to create and customize tables using the commands table and collect. 0000005849 00000 n Most reports and papers begin with a table of descriptive statistics for the sample that is often subdivided by a categorical variable. To create new variables (typically from other variables in your data set, plus some arithmetic or logical expressions), or to modify variables that already exist in your data set, Stata provides two versions of basically the same procedures: Command generate is used if a new variable is to be added to the data set . �V�S[_���o�: The STATA command to run a logit model is as follows: logit foreign weight mpg . a file name when loading the data). For example, I can use tabstat to calculate descriptive statistics for a list of variables. 0000095388 00000 n choose "Change Working Directory…", or use Stata's "cd" command. Stata version 11 (released June 2009) and version 12 (released July 2011) contains a graphical user interface (GUI) for command entry via menus and dialogs.

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