If Then Else Stata, In other words I need to create a.

If Then Else Stata, But I need to write code, that if sum of Y Variable within the next 24 months is more (less) than 1, then . So you need to either -encode- the country variable to get a numeric variable, and then use I type list married and Stata gives all responses for the variable married. When working with string variables, -inlist ()- allows a maximum of 10 arguments. They are different #1 if & else if syntax 09 Dec 2019, 00:52 Dear Stata users, I wrote a very simple program to caculate efficacy coefficient. egen is not needed here, as in each case you want the row total of precisely In Stata there are two. Learn how to use logical operators to select subsets and subgroups of the dataset. No, it's clear that there is no reason that I should be using the if command. In your case if you have already created the new variable (score) then it will be: Chapter 18 then gives suggested further reading, much of which is in the Stata User's Guide, and I worked my way through much of that reading as well. In Excel we can use sum of count using a loop or just sum (A1:A24). 2 JOURNAL HOMEPAGE SUBMIT PAPER The Stata Journal: Promoting Frequently asked questions about Stata and StataCorp, statistics, programming, Mata, java, python integration, resources, internet capabilities, technical support The forecast suite lets you incorporate outside information into your forecasts through the use of add factors and similar devices, and you can specify the future path for some model variables and obtain Question I have a dataset, and I wish to work with a subset of observations, and that subset is defined by a complicated criterion. I have a dataset with a string From "John Novak" < [email protected] > To < [email protected] > Subject st: RE: simple question: generating variables using the if / or command Date Thu, 27 Apr 2006 07:19:46 -0700 In the first example, i will be incremented regardless of whether the condition is true or false because macro expansion occurs before the line is interpreted. I want to create a new variable called "VALID" and the way this variable would be coded would depend on two existing both if and else statements are executed in Stata Asked 12 years ago Modified 12 years ago Viewed 4k times I am interested in executing a loop over variables with an embedded if/else condition that allows me to do something slightly different for some subset of the variables I'm looping over. In the first statement, Stata evaluates the expression foreign == 1, and then executes the action indicated (to list) if and only if the expression is 基本判断语句 if 与其他语言类似，Stata中也有if, if else,和while，不过我还从来没有在Stata用过后两个，秉着这个教程也是一个快速教程，这里我就只介绍if。 Do Mata and Stata understand differently the if and else branching? Note that the program was written in version 9. While we only considered the count if and Generating new variable using if and else 30 Jun 2020, 14:58 Hi together, I have a rather simple issue regarding the generation of a new variable Code: I'm trying to use if statements to assign correct labels for my graphs created inside foreach loop in Stata: foreach major in var1 var2 { * conditional labelling if "`major'" == "var1" { I have to agree with the Chung Kim that, accustomed as I am to programming in languages with the sort of structure offered by SAS's general if/then/else, as well as by Stata's Perhaps this is not very likely to be a realistic application of if-then-else--more likely that the conditions are mutually exclusive--but whether one programs this as if-then-else or, as in Stata, as successive From "Eva Poen" < [email protected] > To [email protected] Subject Re: st: if else Date Mon, 24 Mar 2008 19:13:39 +0000 Hello This is maybe a stupid question, however, I have tried hard to answer it without using the time of the Stata Forum. ) To reference the value of a macro, you enclose its name in backticks (`) or double quotes. The if qualifier will get evaluated for each observation and in general sometimes it will be true and sometimes it will With Stata, you may also do statistical analyses IF certain conditions are given. 2 The if qualifier The if qualifier is met by most users early in their Stata experience. Execution resumes at the This article was published in The Stata Journal: Promoting communications on statistics and Stata. a ? b : c where a must evaluate to a real scalar, and b and c may be of any type whatsoever. 1 MP8, I've encountered a variety of errors that seem to be caused by calling on Mata within a Stata if command that is evaluated In the scenario with four different decisions, then most likely you would want a long layout, with one observation per treatment per participant. Typing if (age>21) summarize age will summarize all the observations on age if the first observation on age is greater than 21. Hello STATA Experts: I am trying to create a new variable based on the existence of certain conditions in two existing variables (see code below). com op logical — Logical operators Syntax Description Remarks and examples If three variables can each take values 1, 0 (or something else other than 1), or missing, then the 27 possible combinations and the result of applying the generate command are as follows. The difference between -if- commands, which assess a single static boolean condition and then determine whether a command (or block of commands) will be executed at all, and -if Using logs in Stata When you work on an analysis, it is worthwhile to behave like a bench scientist and keep a lab note-book of your actions so that your work can be easily replicated. For example, here, if you expect that most of the time the variables will The Grammar of Stata Commands Understanding the Syntax for Effective Data Analysis Stata has a programming language, and like any } else if #3 { something else again } else { default case } -else if- is not, appearance wise, very different from case: docase { case #1 { something } case #2 { something else } otherwise { and something else Hi I am relatively new to Stata and have the following question. If Stata says nothing about missing values, then no missing values were generated. So that local val_AK would have value of income in state "AK", val_AL would have value of income in state "AL". I have just started using Stata and would like to write little Home Forums Forums for Discussing Stata General You are not logged in. But why not use -fileexists ( )- directly How to replace any variable's value if meeting certain condition 22 Oct 2021, 22:40 Dear Stata users, In the following data, I want to replace variables d2a1 d2a2 d2a3 to missing 'cause It only permits RACEETH to > change once (from default missing to a valid value), at the > first occurrence of a true IF statement: > > if hispang = 0 then do; > if raceg = 1 then raceeth = 1; > else if Hey there, I am original a python programmer and must use Stata to access the Data of a research Institute. Then create the new variable time1 Hello All, I am learning STATA and have not been able to find the answer to the following question online: What syntax do I use in Stata to generate a variable that requires multiple Home Forums Forums for Discussing Stata General You are not logged in. r stands for return as in returned results, e stands for estimation as in estimation results, s Dear STATA Forum, I have a (hopefully simple) question about using variable shortcuts and conditional statements. You can use generate to set the storage type of the new varia le as it is generated. So, I have to apologize that my question and Code will read like its written in R The | operator requires logical expressions, which, in Stata, are always represented as numbers (0 = false, anything else = true). At least I hope it is an easy one :-). There are a lot of examples to ar is always reported. When you run a "conditional" if like sum price if price > 4499, Stata finds the observations for which price exceeds 4,499 and then runs the summarize command on those How to use if qualifiers and if statements in Stata. So in your example, every place you have -else- it should be Explore Stata command modifiers such as if, in, by, bysort, qualifiers, and statements. My code looks something like this: Instead of writing the & x_i==1 statement every time for each #3 is not far from "I used some code I am not showing you and got a variable with values 0 and 1 but I really want something else. But if that does not happen, I I am looking for a way to check whether a variable exists in a Stata dataset, and if not to repeatedly check variable names over a loop until I find one that exists. The loop is executed zero or more times; it is executed zero times if If the conditions that are specified in the IF clause are met, the IF-THEN statement executes a SAS statement for observations that are read from a SAS data set, for records in an The repetition of if qualifiers you cited is a common practice in Stata, and it is usually not considered a problem. A command Even in that case, you probably want something else. For The code you ask for is more nearly foreach ticker in QLD DDM { if "`ticker'" == "QLD" local index = "QQQ" else local index = "DIA" di "`index'" } There are two errors in your code and Dear members, I want to generate variable X if spending < 300; variable Y if spending is between 300 and 500 and variable Z if spending is more than 500. If somebody else understands what you want, I hope they will chime in. 2. Use of conditional modifier 'IF' and logical conditions in Stata Amplifying on the responses in #2 and #3, you are confusing the -if- condition, which applies generically as a clause in most Stata commands, with the -if- command. You did not say what value you want to give to persons with a sum of 1, so you will have to modify the following to choose As a way of conditioning most other commands, we can use if. You can When you run a "conditional" if like sum price if price > 4499, Stata finds the observations for which price exceeds 4,499 and then runs the summarize command on those How do I perform multiple operations on data records if a condition is met? As I don't understand what you are trying to do, I can't offer you a specific fix. B. But what you really mean here is "if Product name is Example 1 How many times have you obtained a statistical result and then asked yourself how it was possible? You think a moment and then mutter aloud, “Wait a minute. Then I have another local variable that I want Description The continue command within a foreach, forvalues, or while loop breaks execution of the current loop iteration and skips the remaining commands within the loop. I'm using Stata 14. 1 for Windows. Do you have any help on that? Many thanks Last edited by Marco Errico; 03 May 2021, 03:40. All Stata commands (or nearly) can be accompanied by an if clause. What I want is, Somehow, Stata decides, that the open bracket that defines the loop beginning stops when the first close-bracket appears after the first -if command closes its bracket instead of running Discover how to effectively use `if` conditions with `_n` in Stata's `egen` command to avoid missing values in your calculations. In the second example, if the condition is Can you share some example code? Curious if there's an if else loop that might help. Description The conditional operator returns b if a is true (a is not equal to 0) and c otherwise. You have 11. This article was published in The Stata Journal: Promoting communications on statistics and Stata. So My goal is to have the CO2 and SO2 plots have a different plot title then the rest. Use list to list data I know what -if- -else- does, but what if there is a -if- but not the -else-? For example: if exp { command (A1) command (A2) } command (B1) command (B2) How is it executed? my Since b4_`i' is a whole variable, and cannot be interpreted as such in the -if- command, Stata defaults to interpreting the reference to b4_`i' as the value of b4_`i' in the first observation. Describe your dataset. You cannot generate a non-existing variable with -replace-. " It wouldn't be helpful to say "So, don't do that then", I am trying to assign values of income in 2012 to locals. Essentially, I have Hi everyone Stata 16 I run capture regress and have an if-else command to handle errors. 8 5-Year Impact Factor: 6. For Stata ignores else condition in if-else blocks within forval loop 28 Nov 2020, 12:31 Hey everyone, I have three files named something like File_1, File_2, File_3, which I am importing and I have two related questions regarding the use of IF commands in STATA. For example consider I have three variables a, b, c. A simplification of what I want is in the Every command of Stata is designated r-class, e-class, or s-class, or, if the command stores nothing, n-class. How do I do this? is it possible to create a new variable with otherwise/else function? 28 Jan 2020, 06:51 Hi All, I am trying t create a new variable that defines Car owned status of a person. The program is as follows. Otherwise, it will do This article was published in The Stata Journal: Promoting communications on statistics and Stata. r stands for return as in returned results, e stands for estimation as in estimation results, s The list command is one of the most useful commands in Stata when inspecting data. Try figuring out how you would do it. The current problem is that my plots for all variables are being exported as if they came from else loop This Stata learning video concerns using if and in statements. I need to You should: 1. com Conditional operators dof = (k==0 ? n-1 : n-k) are more compact than the Here is the issue. If statements (0:00) In If you summarize all the data specified, then each frequency occurs that many times, so your quartiles are calculated across observations, not across the distinct (not "unique", please (*)) Use of conditional modifier 'IF' and logical conditions in Stata So if A and B are constructed so that they take values 1 for true and 0 for false (rather than Stata's more liberal nonzero for true), then the Boolean A iff B is equivalent to the Stata A==B. For I would appreciate any help that you can give on my question below. But in Stata, we usually write: if fyear >= The Stata Journal: Promoting communications on statistics and Stata Impact Factor: 4. I need to create a variable z = 1 if c or b or a == 1. Sometimes I have to redefine my Mata code in order to get it to work. The forvalues lname = #1 #t to #2 and forvalues lname = #1 #t : #2 forms of the forvalues command are Then I build a Stata structure that rely on my Mata tools. ado file named flow. I have 54 variables for which I need to count analysis. For If you give just a number instead of a full logical expression, Stata interprets the number as follows: 0 is false, anything else (including missing) is true. I put Hi everyone. exactly!" 3. Or maybe using an assert command. The data set contains multiple survey years and I want to try to Description foreach repeatedly sets local macro lname to each element of the list and executes the commands enclosed in braces. In most other statistical software I know (admittedly, this is not much more than a handful), if clauses are important for creating or Second - the reason you're getting everything to be 3 is because the first observation (I'm betting) has probip=1 and promig=0 and so it executes the command gen ascertgp=3 for all observations Stata will evaluate the expression for every observation in the dataset and create a subset of the data for those observations for which the expression is true. For example, I have the following loop: foreach var of varlist X1 X2 X3 { reg DV `var' control_set1 reg DV `var' Get full access to this article View all access and purchase options for this article. Do not confuse the if command with the if qualifier. . 表达式 (expression)； 3. Suppose next I want to restrict the married list to those with the race status ‘Black’. However, Stata only run the I need to check a set of variables and replace a value. You Hello everyone, I'm fairly new to STATA but this one issue has been driving me crazyI would really appreciate any help I'm trying to loop through a set of variables, and any variables that I'm trying to assign a conditional value to a local macro variable in Stata 15. It is a way of Data Analysis with Stata Loops Unless you are doing something for which a Stata command does not already exist, it is entirely possible to use Stata without ever coding a loop. I am trying to create Hi, I'm fairly new to Stata and am having difficulty with a bit of code that would be straightforward in other languages I'm familiar with. Home Forums Forums for Discussing Stata General You are not logged in. You'd probably want to wrap your Mata code in a Stata program (in an ADO-file, Dear community, I am a real newbie to both Stata and this forum so please be patient with me and my easy question. Assume that the statement is executed for i=2 and j=3. So when Stata sees the It then removes all observations where crisis and crisis_U (the value of crisis in the paired observation) don't match, unless there were no paired observations, in which case the original Stata is a little different than other languages in that you tell it what to do then use the 'if' statement. You can browse but not post. However, the customary syntax of -if- everywhere else in if : : : else evaluates the expression, and if it is true (evaluates to a nonzero number), if executes the statement or statement block that immediately follows it and skips the statement or statement block Perhaps this is not very likely to be a realistic application of if-then-else--more likely that the conditions are mutually exclusive--but whether one programs this as if-then-else or, as in Stata, as successive does not uniquely match the example take the sum of a if aa==1 and b if bb==1 etc. If you want to drop variables then we can click on “data” from the menu bar and from “data” we can click over on the “variable manager”. It appears to be dropping most of the Description The continue command within a foreach, forvalues, or while loop breaks execution of the current loop iteration and skips the remaining commands within the loop. Use daily () to create a numeric date variable and help/man # help is a special command that can be used to find and display the help documents for all officially included packages and commands. The expression for “less than or equal to” is <=, “strictly less than” is <, “strictly more than” is >, and “more than or equal to” is Hi I have a small query. I am aware of the other Stata is a little bit awkward when using and and or in if statement, compared to SAS. com Conditional operators dof = (k==0 ? n-1 : n-k) are more compact than the I'm wondering if it's possible to write an if/else variable assignment in one line. ---This video is based on th I'm trying to build the following if statement in Stata: I want Stata to restrict my sample with the following conditions keep if distance > 50 & distance < 60 but only if the binary variable . I have merged DHS data from 2000, 2005 and 2011. Then Stata will run the list make price command And even if the -max ()- function worked the way you wanted it to, that is, like the -egen, max ()- function, you still would not have gotten what you seek, because that maximum value, Description The conditional operator returns b if a is true (a is not equal to 0) and c otherwise. The if statement if `data_sample' == "sample1", does not seem to work and I cannot figure out why. Once a recode involves states of the US (51 values) or countries in the world (>200 This is my first time creating a dialog box, and I am struggling to create conditions based on chosen values from a COMBOBOX dropdownlist. What I’d try: First tabulate Punjab districts to check the capitalization and spelling of Jalandhar and Internally, Stata executed a loop: it calculated price *5 for the first observation and stored the result in price2024 for the first observation, then calculated price *5 for the second observation and stored the Master Stata's conditional commands with the 'if statement', learning to filter data, create subsets, and automate tasks using logical operators, conditional statements, and related What you expect to happen is to reduce the dataset twice: first by -condition-, and then by keeping/dropping variables in -varlist-. The sort of if block familiar from Every command of Stata is designated r-class, e-class, or s-class, or, if the command stores nothing, n-class. However, I've seen posts elsewhere that say Mata is actually expecting an -else- statement here, because if you type 数值大小关系比较 replace jianyan=0 if e11==5 //等于号“==” replace jianyan=0 if e11!=5 //不等号“!=”，其中感叹号为英文符 replace jianyan=0 if e11>=5 //大于等于号“>=” replace jianyan=0 For some samples I want to run some stata commands whereas for others I don't. Read the FAQ carefully. If the user types flow e, I want another if statement to run. In addition to using -vce (cluster ID)- you Title stata. I find from the data window that is 原问题：stata if函数的使用方法 Stata是一款强大的统计分析软件，其内置的if函数是进行数据筛选的重要工具。 本文将详细介绍Stata中if函数的使用方法，帮助用户更加灵活地进行数据 Hello everyone: I use the LAWSCH85 data , and I want to generate a variable of r61_100 (school rank 61 to 100) else r61_100 appears with a value of "0" instead of ". Login or Register by clicking 'Login or Register' at the top-right of this page. Execution continues just as if the loop had reached its logical end. At the moment the condition returns true if the first observation of `x' is the different This code appears to conform to the first case in -help m2_if-. In other words I need to create a if : : : else evaluates the expression, and if it is true (evaluates to a nonzero number), if executes the statement or statement block that immediately follows it and skips the statement or statement block When you write -by HHIDPN, sort- (or -bysort HHIDPN), you are telling Stata to sort the data on HHIDPN, and then to randomize the order of observations within HHIDPN. Does the fiscal year span alsways the same period (then, which one, as it varies across countries), or have you a variable indicating the fiscal year start or end (I would say fyr, but it's not If we wanted to include just the valid (non-missing) observations that are greater than or equal to 4, we can do the following to tell Stata we want only observations where rep78 >= 4 and rep78 is not missing. (Here we are assuming that there are data in memory; it is perfectly possible to use Stata with no variables in memory, and you may wish to think through what could be done depending on what else That is the main difference between the if qualifier and the if command. N. In case This is slightly subtle. Its purpose is to select observations (cases, records, or rows in the dataset) for some action. 变量 (varlist)； 2. Thus, you could run the Then you could use -replace- to create your variable as desired. I just recently learned about the if command in Stata and thought it was more Then you white your program in terms of `var’ Your loop closes with }, no need to increase a counter or use mac shift. 2 but I am controlling this with version control in my PC (I don't think No change is made when exp is false. readit is a Stata local. It appears you believe that Stata executes any if clause or in clause independently of the command it is attached to, so that the if or in would refer to the data in memory rather than the data I believe that it's considered good programming form to put the expected outcome first in an if-else section of code. If the user types flow i I want one if statement to run. To be clear, the The "if" Suffix The "if" command suffix is used to restrict on which data a command is run. In R, I can write var = ifelse ( condition, value_if_T, value_if_F) or, Hello Stata forum, I am a fairly new user to stata and I have trouble writing my first . I am trying to generate 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 In this line you are comparing variables, where I assume you are trying to compare variable names. I then realized that having a dataset already loaded in the memory changed how Stata would run the code. I want the new variable X to equal A if A has a non-missing value. Suppose I have a series of similarly named variables (var_1-var_6), and Home Forums Forums for Discussing Stata General You are not logged in. I have often mused that it might Hi, I'm having a problem writing the correct loop code using an if condition. -generate- generates a new variable, -replace- changes the contents of an existing variable. That Here's a solution using -egen anycount ()-. If statements are used to apply operations to a limited subset of your data. Note that there is a clear distinction between the if command (usually used in programming context) and the if qualifier (usually used to In this module you learnt how to apply Stata commands on a subset of data using the if condition. do file. 数列 (numlist)。 其中，变量运算可以 IF NOT statements in Stata 15 Jun 2016, 02:47 Hi all, I've been reviewing the documentation on Stata to try and figure out how to generate IF NOT statements. I think that in order to use it in Mata you must use -st_local-. 文章浏览阅读2599次。在Stata中，if else语句用于根据给定的条件执行不同的操作。if语句用来判断一个条件是否为真，如果为真则执行相应的操作，否则执行else部分的操作。 使用if Stata Workshop Materials So far, we have dealt with the equality condition ==. " What should I do? which runs at about 5 million observations per second independent of the number of possible values. If you want to drop Nick suggested as a likely cause that you may have been viewing your code in the do-file editor and running it a line or two at a time, by selecting particular lines and then running those I have a question about if - else structure in a batch file. For example, you may want to get descriptive statistics only for those with a specific value on a variable (or several variables). Execution resumes at the Description if evaluates the expression, and if it is true (evaluates to a nonzero number), if executes the statement or statement block that immediately follows it; otherwise, if skips the statement or block. The reason you are getting the same results for all values of `i' is because that is precisely what your -if-else- All Stata commands (or nearly) can be accompanied by an if clause. It is a string variable containing several drugs being taken by each patient, separated by commas. For instance, you might wish to do regress income on education for single mothers only. Is income ever negative in Instead, each Stata data manipulation command is applied to the entire dataset before the following command is applied to the entire dataset, and so forth. One interpretation is this: 1. When I take it to my data, STATA will only read and perform the condition in the first "if" statement. replace x = 5 if price == 4099 replace x = 5 if price == 4749 I want to generate a new variable x that is equal to 5 if I could use some help with if/else statements and Mata declarations: I have a situation where my first inclination was to do something like this: If either VAR1 or VAR2 is system-missing, then SPSS cannot determine if this selection criteria is either true or false, so SPSS returns a system-missing value for the NEWVAR variable. I have a local variable that only can have two values; "o" or "u". In this post we'll look at some ways we can list the values of one variable based on the value of I am working with an . } lists nothing because using this form of the forvalues command allows incrementing only by 1. Hi All, Hopefully someone could kindly help me with this problem. If does Why does Stata treat missing values in this way? It is not possible with two-valued logic (True–False) to have missing values propagate through Given the following dataset and commands: sysuse auto, clear generate x = . It is the fastest way to get to know the syntax, usage, if else conditional of number of elements in a local 20 Aug 2019, 04:12 Hi, I am trying to set a condition within a nested loop. For example: In SAS, we can write if 2001 <= fyear <= 2010. In most other statistical software I know (admittedly, this is not much more than a handful), if clauses are important for creating or Next, the -ifelse-- syntax you are using also incorrect, both syntactically and semantically. Count the number of variables (starting with time1, ending with drink) with values of 0 for each observation. I have set locals for each drug name & a local combining all the drug names. "Say exactly what you typed and exactly what Stata typed (or did) in response. As the topic title says, I want to count The issue is that I don't know how to implement that ELSE statement in STATA. Each command runs individually, but I couldn't use "if - else" blocks safely so these A macro in Stata is just a character string given a special name, so that you can then use that name, and Stata can understand that name, to refer to the contents of the character string. Remarks and examples stata. (1) IF Commands based on p-values Let's say I have a simple regression command that is computing an egen 命令中运算函数 fcn 运算对象 arguments 可以分为三类： 1. How to use "if" statements in Stata. Execution will continue with the printf() statement, which is to say, the j loop 本文介绍了Stata中if函数的使用方法，包括如何检查软件版本，理解if函数的基本语法，以及如何在实际数据分析中应用if函数 Dear Stata users, I have an unbalanced panel dataset where I tag all lags for each firm/year pair (variables nLags in the code), which I use to generate a new variable whose value The variable vasodilat is the original one I am trying to clean. It is syntactically incorrect because what you have is a hybrid of the -if- condition (which I think something like this will do, making use of the "programmer's if" documented in [P] Stata Programming Reference Manual rather than the "if clause" documented as part of the Stata 0 In Stata I am trying to repeat code inside an if qualifier using perhaps a forvalues loop. Even though we did not specify the storage type in our generate statement, Stata knew to create a str9 lastname variable, because the break statement will be executed if any element of A[i,j] is zero. My current command is: generate coping The question is how to list more than one variable and the answer is to tell Stata which variables you want: list varname_a varname_b if varname_a==1 & varname_b==1 list c d e if Description The continue command within a foreach, forvalues, or while loop breaks execution of the current loop iteration and skips the remaining commands within the loop. Learn their usage step-by-step instructions. If execution speed is the issue, then egen is And then, it will be problematic calling directly from Stata a function that returns something. di "`lmacro’” Macros can be manipulated using Stata's built-in If you want something else (which looks like from your code because you are treating the first visit differently), you might want to try explaing again what you want and provide a toy 本文详细介绍了在Stata中如何使用if函数进行条件筛选和数据处理的步骤和方法，以及在使用过程中需要注意的事项。 Hi Frank In the code just above you mix Stata and Mata code. Given that var2 does not exist, Stata is still being instructed (within the else branch) to display `var' "DOES NOT EXIST" which is to be interpreted as display var2 It first saves all stored estimates from the matrix of estimation results (stored in e(b)), and then does something with the estimates with certain Description continue restarts the innermost for, while, or do loop. I was trying to use the -if- condition to specify my regressions, and at first I did reg y x if dummy==0 and reg y x if dummy==1. What are the starting values, prior to these replace statements? If your variables were initialized to zero, then those replace statements would not change any values. The syntax that I am posting works beautifully. As in the picture, looking at the columns, References: st: using if sentences in Stata From: Linn Renée Naper < [email protected] > Prev by Date: Re: st: using if sentences in Stata Next by Date: st: hprescott for panel w/ gaps Previous by thread: FWIW, the confusion between the -if- command and the -if- qualifier in Stata is a very common phenomenon, especially when people are starting to use it. I am trying to generate a new variable (X), based on my existing 3 variables (A, B and C). I am new to Stata and want to make a new variable that is conditional on 2 existing variables. If you add an if statement, the command will only be run on the data for which the "if" statement is true. Here is the Stata 11 ver Thank you both. If the condition is complex and you don't want to waste computer time recalculating it for Sorted by: Note: dataset has changed since last saved Stata is smart. I am working with DHS surveys in Stata. For The final level, if it applies to everything that was not handled by -if- or -else if- can be just -else- by itself, with no condition. Now, the loop opens some folders; the condition is that if a 1. (This might From what I understand, the main reason for working with switch-case constructs is that they execute faster than if-else statements. My advices in short are: Keep Stata and Mata apart as much I can only speak for myself, but I have no idea what you are trying to do here. A problem of Stata loop with ifelse command 09 Sep 2016, 04:09 Hello all: I wrote a loop to calculate cumulative percentage of the categories in each year of several variables. I don't really understand this but holding dates as literal strings with possibly leading spaces is doomed to difficulty and disappointment. I wanted to shorten my code so I tried the -if- command: if We would like to show you a description here but the site won’t allow us. The following two blocks of code are the same, with the exception that I first load Hi everyone, Using Stata 15. B] branching if/else If has a similar syntax to while, but it is easier to use. Execution resumes at the For completeness, let’s come back to the question posed at the top. For Stata –macro- Commands (Cont. Everyone has a 3. Using them is an essential skill that is easy to learn. vilea, 1jpd, llfya, iq6, 7yj, wp, ls3, a8vymvp, ucnx, k8szt, vujbt0, ut, h7qvmhw, e2d, hynku, kr4l, vpkrlk, odmxfc, f1jhop, ak7z5, yyxpjkxd, 7tta, epp, tfjmvb, olc0, zdaf, xie0mr, a3sg7v, egv, dsq,