How do you match cases in SPSS?

How do you match cases in SPSS?

To merge data using SPSS graphical interface:

1. Open the data file Data1. sav .
2. From the Data menu, select Merge Files and then Add Variables….
3. Select the file to merge (e.g., Data2.
4. In the “Add variables” dialog box, select Match cases on key variables in sorted files and check Non-active dataset is keyed table.

How do I merge two SPSS files with the same variable?

Merge two files in SPSS

1. Use the SORT CASE command to sort each file you wish to merge on the index variable.
2. After sorting, use the SAVE OUTPUT command to save each file to a systems file.
3. Use the MATCH FILES command to merge the files and create a single, final version of the file.

How can you merge two files in SPSS when the cases are not perfectly the same?

You have to use merge variable option. After that you have to mention key variables which should be in both files. You have the option to exclude some variable if you would like to otherwise SPSS will merge both files with all variables.

What is the correct SPSS command sequence one would need to perform to combine two datasets that contain the same variables but different cases?

MATCH FILES is an SPSS command mostly used for merging data holding similar cases but different variables. For different cases but similar variables, use ADD FILES . MATCH FILES is also the way to go for a table lookup similar to VLOOKUP in Excel.

What do you need to know about SPSS match files?

SPSS MATCH FILES Command. MATCH FILES is an SPSS command mostly used for merging data holding similar cases but different variables. For different cases but similar variables, use ADD FILES. MATCH FILES is also the way to go for a table lookup similar to VLOOKUP in Excel. Merging two datasets by id, which is a unique case identifier.

How many cases and controls are there in SPSS 23?

I am using SPSS 23 with 745,414 observations, 595,388 controls and 150026 cases (20.1% a 1:4 ratio). The cases and controls are already matched for age and sex, but I am trying to create clusters of five observations (1 case and 4 controls), each marked with a specific ID.

What happens when a case is not selected in SPSS?

As you can see, SPSS has struck out cases on the left that are not selected. It has also introduced a new filter variable that specifies whether a case has been selected or not. Finally, bottom right, it says Filter On, which tells you that any tests or analyses you run will be on a subset of the data – that is, on only the selected cases.

How to add match cases to a file?

In the “Add variables” dialog box, select Match cases on key variables in sorted files and check Non-active dataset is keyed table. Under “Key Variables:”, select ID.