Abstract
Indicator or dummy variables record whether some condition is true or false in each observation by a value of 1 or 0. Values may also be missing if truth or falsity is not known, and that fact should be flagged. Such indicators may be created on the fly by using factor-variable notation. tabulate also offers one method for automating the generation of indicators. In this column, we discuss in detail how otherwise to best generate such variables directly, with comments here and there on what not to do.
| Original language | English (US) |
|---|---|
| Article number | dm0099 |
| Pages (from-to) | 246-259 |
| Number of pages | 14 |
| Journal | Stata Journal |
| Volume | 19 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 2019 |
Keywords
- All
- Any
- Dm0099
- Dummy variable
- Functions
- Indicator variable
- Logical and relational operators
- Merge
- Missing values
- True or false
ASJC Scopus subject areas
- Mathematics (miscellaneous)