2 Categorising a continuous variable 1 Choose Transform, Recode, Into Different Variables. Double-click on variable Rank to move it to the Input Variable -> Output Variable box. I can easily recode numeric variables using the GUI and the dialogue box shown below: But when i enter a string variable into the same dialogue box the option to define the new value as "System-missing" is not available: This method tells SPSS exactly how to map each old category onto a new category. Click on 4. Class ranks for high schools and colleges are are nicknames for what year of study the person is completing: "freshman" (first-year), "sophomore" (second-year), "junior" (third-year), "senior" (fourth-year). The new special variable should appear. The DO IF and ELSE IF lines tell SPSS to perform the nested computation if certain conditions are true. Note that you can use the letter combinations or the mathematical symbols in your statements. Our tutorials reference a dataset called "sample" in many examples. Once you are finished, click Change. The Multiple Response Frequencies dialog box. You can also use the options in the Function group list. The same is true for creating hirt1 from trialr1. In the sample dataset, the variable Rank has the categories Freshman (1), Sophomore (2), Junior (3), and Senior (4). Combining multiple responses into one variable in SPSS Statistics Question As the title suggests I would like to know how to turn the results of a multiple response question into a single variable, so it can be used to run a variety of tests. That is, the original values will be replaced by the recoded values. The most common recoding errors happen when you don't tell SPSS explicitly what to do with missing values: SPSS may recode missing values into one of the new valid categories. Each response in a multiple response question should be coded as a … Please try again later or use one of the other support options on this page. When you are ready to run the procedure, click OK. Now your new variable will be recoded according to the criteria you specified. 4 The Function Group box contains common functions that may be used for calculating values for new variables (e.g., mean, logarithm, sine). C Old and New Variables: Click the Old and New Values to specify how you wish to recode the values for the selected variable. Multiple responses depend on the half normal percent probability and the ANOVA. In the Output Variable area, give the new variable the name, Handle missing values first: In the Old Value area click, Define the underclassmen group (1): In the Old Value area click, Define the upperclassmen group (2): In the Old Value area click, 2 = Commute is more than 30 minutes, but less than 60 minutes (30 < time < 60), Double-click on variable CommuteTime to move it to the Input Variable -> Output Variable box. Rather than using the recode command, use an if statement like this: You could then merge the data together with your SPSS dataset on respondent ID. About Recode Values. 29th Aug, 2018. EXE. Search, None of the above, continue with my search. When recoding variables, always handle the missing values first! Click in the menubar on 2. An alternative, which also allows us to do further analysis, is to use the Multiple Response command. If the new variable appeared but all of the values are missing, then there is something wrong with your code; you may have forgotten an EXECUTE statement. The above example showed how to discretize a continuous variable into three categories using Recode into Different Variables. Cite. Let's use DO IF syntax to perform this recode and save the results as a new variable, MathGrade. SPSS also provides extensive data management functions, along with a complex and powerful programming language. IF v#f=1 ethnic=6. How to recode multiple response variables in SPSS into a single categorical variable. This is especially true if using the "Lowest thru", "thru Highest", or "Range - through" options. To create a frequency table or a cross table from these variables, you can let SPSS know that these belonged to each other by creating a multiple response set. The COMPUTE statements are where the new variable(s) are actually computed or set. The Recode into Different Variables window will appear. (Note that although SPSS indicates numeric missing values using period characters (. 3 The center of the window includes a collection of arithmetic operators, Boolean operators, and numeric characters, which you can use to specify the conditions under which your recode will be applied to the data. (We discuss the If option in more detail later in this tutorial.). Using "All other values" to define group 2 was completely dependent on us correctly accounting for all other possible categories first, including the missing values. Click Transform > Recode into Different Variables. This will allow you to specify the conditions under which the recode will be applied to your data. We'll dichotomize variables v4 to v6 by changing values 1, 2 and 3 into 0 and values 4 and 5 into 1 as implied by recode v4 to v6 (1,2,3 = 0)(4,5 = 1). Managing such questions in SPSS Statistics can produce some difficulty. You will need to repeat these steps for each value that you wish to recode. You may have to record the respondent ID number in a spreadsheet along with your numeric recode. B Output Variable: Define the name and label for your recoded variable(s) by typing them in the text fields. Recoding Variables - SPSS Tutorials, This tutorial shows how to compute new variables in SPSS using formulas and A Target Variable: The name of the new variable that will be created a variable (or multiple variables) from the left column, moving them to the Statistics Software Spss. Move the $Fruit variable into the Table (s) For area, as shown. DO IF-ELSE IF syntax performs similarly to the Recode procedures, but allows for more control over specifying numeric ranges. id v#a v#b v#c v#d v#e v#f v#g v#h The "Range" option can be used when your a recoded group includes the endpoints (i.e., is defined by "greater than or equal to" AND "less than or equal to" statements). Suppose we have test scores as percentages, and want to convert those percentages to a letter grade. This means that cases meeting the conditions will be recoded, and cases not meeting the conditions will be assigned a missing value. Search support or find a product: Search. Search results are not available at this time. In almost every situation, you want to use Into Different Variables.Recoding Into Same Variables replaces the values in the existing variable. D If: The If option allows you to specify the conditions under which your recode will be applied. You will define the new name in (C). The command Into Same Variable replaces existing data with new values, but the command Into Different Variables adds a new variable to the data set.. Have variables v#a, v#b, v#c, .. v#h which each represent a choice of ethnicity and have a value of 1 if chosen by the respondent. Syntax to create new variable (ethnic) and value labels and how to set priority: 2 1 1 0 0 0 0 0 0 create a new variable next to the verbatim response and enter in your numeric score/code). With that constraint, how would we achieve a grouping that was intended to have an open endpoint? Is it possible, if more than one choice is indicated , for the recode to use a priority system in choosing which one to specify in the new variable? Spss create new variable from multiple variables. To specify such conditions, click If to bring up the Recode into Different Variables: If Cases window. This method tells SPSS exactly how to map each old category onto a new category. After recoding we must respecify the value labels for all three variables. The left column lists all of the variables in your dataset. 16 April 2020, [{"Product":{"code":"SSLVMB","label":"SPSS Statistics"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"Not Applicable","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"Not Applicable","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}], Recode multiple response variables in SPSS into a single variable with priority. IF v#b=1 ethnic=2. When entering a question that has multiple answers allowed into SPSS, you need to split each option into a separate variable. © 2021 Kent State University All rights reserved. The multiple response sets that are defined through Analyze - Multiple Response - Define Variable Sets only exist for as long as that current session of IBM SPSS Statistics is open. Click on T ransform > R … ELSE is optional -- you don't necessarily have to use it, but it is often more convenient to use than addressing every possible outcome using ELSE IF. If the INTO keyword is present (followed by a list of target variables) the result is stored into the target variable(s) (list= one or more variables), otherwise the … We can use the recode command to create the variable hit1. This will create a quick frequency table and summary statistics of the new variable. We'll illustrate this with a test case, then show how to use DO IF syntax to properly implement the desired recoding scheme. Example: After the variables have been entered, click on Transform and select “Recode into Same Variable” or different if things haven’t been coded in one take. Suppose we want to recode these scores to have a letter grade using the scheme described above. Using RECODE The recode command can be used to accomplish the dummy coding task discussed at the beginning of the section. Although great for a lot of operations (e.g., calculating sum scores, generating data, etc. To set priorities, you just change the order of the IF statements. Multiple responses—in the sense used here—are defined by a degree of open-endedness. Troubleshooting. When you are finished defining the conditions under which your recode will be applied to the data, click Continue. Selecting the “Different” function reverses each score and includes them in an extra variable. Select the variable you wish to recode by clicking it. If you do use ELSE, it must be at the very end of the loop (right before the END DO statement). ; this will return a syntax error.). Why didn't we use the "Range" option to specify category 2? Assume we have variable famimpor with values 1, 2, 3 and 4, measuring how important having a family is for the respondent. Sometimes you may wish to recode values for a specific variable only when other conditions in your data are satisfied. A basic introduction on how to deal with multiple response data sets using SPSS If v#a is the priority, then you would put the IF statement for v#a after v#b (and consequently after other variables for which v#a takes priority). IF v#g=1 ethnic=7. For example, the response to a particular question may have been measured on a 5-point scale and you might want to reverse the coding so that 1 becomes 5, and so on. Or you could just enter the codes into the SPSS dataset directly (e.g. There are many kinds of conditions you can specify by selecting a variable (or multiple variables) from the left column, moving them to the center text field, and using the blue buttons to specify values (e.g., “1”) and operations (e.g., +, *, /). Once again, suppose you wanted to create a dummy variable from trial1 with a cutpoint of 2. In particular, a question in a survey may receive zero or more positive answers depending on the characteristics or behavior of the respondent. The "Lowest thru" option acts as "less than or equal to some-number", and the "thru Highest" option acts as "greater than or equal to some-number". 1 0 0 0 0 1 2. Problem. We should also be able to check our new variable to make sure that it performed as we expected. If you are using version 20, you may need to put dashes before each COMPUTE statement inside the DO IF block. RECODE famimpor (4=3). IF v#c=1 ethnic=3. 1Old Value: Specify the type of value you wish to recode (e.g., a specific value, missing data, or a range of values) and the specific value to be recoded (e.g., a value of “1” or a range of “1-5”). Recode into Different Variables and DO IF syntax create a new variable without modifying the original variable, while Recode into Same Variables will permanently overwrite the original variable. Published with written permission from SPSS Statistics, IBM Corporation. After selecting a category, you will see function names appear in the Functions and Special Variables box. ), you would not use the assignment statement var=. IF v#h=1 ethnic=8. This method uses ranges. In SPSS, this type of transform is called recoding. Choose Multiple Response Sets and complete the dialog window as shown on the right. RECODE famimpor (1=4) (2=3) (3=2) (4=1). In the sample dataset, the variable CommuteTime represents the amount of time (in minutes) it takes the respondent to commute to campus. If you'd like to download the sample dataset to work through the examples, choose one of the files below: Sometimes you will want to transform a variable by combining some of its categories or values together. When you create a question, a Recode Value and a Variable Name are automatically assigned to each answer choice. The dependent variable is Math, and the layer/ independent variable is MathGrade): Remember that before you perform any further analysis with this variable, you'll want to add value labels showing 1='F', 2='D', and so on. Dichotomizing a continuous variable transforms a scale variable into a binary categorical variable by splitting the values into two groups based on a cut point. With the above syntax, ethnic will be set to 2 as the IF statement for v#b comes after v#a. Is it possible, if more than one choice is indicated , for the recode to use a priority system in choosing which one to specify in the new variable? Select the variable that needs to be recoded and enter new values for each response. Setting up multiple responses set Now we want to group together Q1c-Q1f so that SPSS knows that it is actually a question with multiple responses. The recode that you have specified now appears in the text field. (If you have value labels, perhaps you should change these now accordingly). 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