Thanks Kit.
Mensaje citado por Kit Baum <[email protected]>:
> Amadou said
>
> Nick, from my point of view, it is easier to type:
> nmissing x
> than:
> count if x == .
>
> Easier, and nmissing (appropriately updated) gives the right answer,
> which count does not...
>
> Note that the count statement as given does not tell you how many
> missing values there are; it tells you how many are equal to ".".
> There are 27 kinds of missing values in Stata, and if you want to
> trap all of them,
>
> count if !(x<.)
>
> is needed:
>
> . tab rep78,missing
>
> Repair |
> Record 1978 | Freq. Percent Cum.
> ------------+-----------------------------------
> 1 | 2 2.70 2.70
> 2 | 8 10.81 13.51
> 3 | 29 39.19 52.70
> 4 | 18 24.32 77.03
> 5 | 11 14.86 91.89
> . | 4 5.41 97.30
> .a | 1 1.35 98.65
> .b | 1 1.35 100.00
> ------------+-----------------------------------
> Total | 74 100.00
>
> . count if rep78 == .
> 4
>
> . count if !(rep78<.)
> 6
>
>
> Kit Baum, Boston College Economics
> http://ideas.repec.org/e/pba1.html
>
>
> *
> * 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/
