[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

# Re: st: Dropping Variables - Simple Question

 From Jeph Herrin To statalist@hsphsun2.harvard.edu Subject Re: st: Dropping Variables - Simple Question Date Sun, 12 Aug 2007 08:20:40 -0400

```I think your question is: how do you drop the observations
of Y where X is missing? In that case, the answer is:

drop if missing(X)

This will keep the 50 observations of X, plus the 50 observations
of Y where X is not missing.

hth,
Jeph

tiago.pereira@incor.usp.br wrote:
```
```Dear statalisters,

I have a simple question:

Supose I have two variables, X and Y with 50 and 75 observations,
respectively. How do I delete the first 25 observations of the variable Y
without losing the first 25 observations of the X variable?

Although simple, I have not been able to find out a solution.

Thank you again.

Best regards,

Tiago

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/

```
```*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/
```

 © Copyright 1996–2017 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index