A brief introduction to Stata

## What are Cross Tabulations?

Cross Tabulations, also known as contingency tables, are statistical analysis that examine the relationship between two (or more) variables.

Note: For this example, General Social Survey 2016 data (located on "About Stata" tab) is used to produce the cross tabulation for respondent's health (health) and their confidence in medicine (conmedic).

## Cross Tabulations- Advanced: Point and Click

1. Go to Statistics > Summaries, tables, and tests > Frequency tables > Two-way table with measures of association

2. Under Row Variable: either (a) type the variable name or (b) select the variable name from the drop down menu.

3. Under Column Variable: either (a) type the variable name or (b) select the variable name from the drop down menu.

4. Within the box Test Statistics: select pearson's chi-squared

5. Within the box Cell Contents: select Within-column relative frequencies (column percents) and Within-row relative frequencies (row percents).

6. Select "OK"

Additional Options: You can add and remove statistical analysis within Steps 4-5. Examples below:

• Row percentages: only check Within-row relative frequencies
• Column percentages: only check Within-column relative frequencies
• Chi-squared: only check pearson's chi-squared
• Row percentages and chi-squared: check Within-row relative frequencies and pearson's chi-squared
• Column percentages and chi-squared: check Within-column relative frequencies and pearson's chi-squared
• Column and Row percentages: check Within-column relative frequencies and Within-row relative frequencies

1. In the Command box type in the following code

tab variablename1 variablename2, row col chi

Example: tab health conmedic, row col chi

2. Hit Enter key

Additional Code Options: You can add and remove statistical analysis at the end of the code. Examples below.

• Row percentages only: tab variablename1 variablename2, row
• Column percentages only: tab variablename1 variablename2, col
• Chi-squared: tab variablename1 variablename2, chi
• Row percentages and chi-squared: tab variablename1 variablename2, row chi
• Column percentages and chi-squared: tab variablename1 variablename2, col chi
• Row percentages and column percentagestab variablename1 variablename2, row col