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From |
Tim Wade <[email protected]> |

To |
[email protected] |

Subject |
Re: st: Produce a list of two-sided p-values of all t-tests in a loop |

Date |
Sun, 8 May 2011 23:06:33 -0400 |

There are many ways to do this using different ways of storing results, (see "help estimates", and the -estout- program from SSC). However, -postfile- may be what you are looking for, here is an example: sysuse auto.dta, clear tempname memhold tempfile ttests postfile `memhold' str12 name pval using `ttests' foreach var of varlist price mpg rep78 headroom trunk { ttest `var', by(foreign) post `memhold' ("`var'") (r(p)) } postclose `memhold' clear use `ttests' . list +---------------------+ | name pval | |---------------------| 1. | price .6801851 | 2. | mpg .0005254 | 3. | rep78 8.31e-08 | 4. | headroom .0110486 | 5. | trunk .00166 | +--------------------- Tim On Sun, May 8, 2011 at 6:16 PM, Jean-Marie Meier <[email protected]> wrote: > Dear Stata list users, > > for my data set I want create several tables with descriptive statistics. For these tables I want to test whether the mean and median value of variables are different from 0. > I run the t-tests with the following loop. I now want that Stata produces a list of the two-sided p-values of all t-tests in the loop. the two sided p-value is saved as r(p) if the command ttest is used. > Thus it should be possible to add a command to the loop, that the two-sided p-value is saved each time with a different name (such that not only one p-value is saved, which is constantly overwritten). > However I do not know how to do that! It would be great if someone could help me. > > local j=0 > global global_name var1 var2 var3 ... > > foreach x in $global_name { > > local j=`j'+1 > > ttest `x' == 0 > > } > > > > Kind regards, > > Jean-Marie Meier > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Produce a list of two-sided p-values of all t-tests in a loop***From:*"Jean-Marie Meier" <[email protected]>

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