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From |
Roger Harbord <Roger.Harbord@bristol.ac.uk> |

To |
statalist <statalist@hsphsun2.harvard.edu>, "Steichen, Thomas" <STEICHT@RJRT.com> |

Subject |
st: RE: difficulty using META command and exporting output in Stata |

Date |
Thu, 17 Oct 2002 12:49:16 +0100 |

--On 16 October 2002 15:26 -0400 "Steichen, Thomas" <STEICHT@RJRT.com> wrote:

<snip>John Hopkins writes (in part):I am working on a meta analysis of studies looking at the risk of cancer in asthma patients. We are using the META command to generate our summary estimates (we have adjusted odds ratios, with standard errors). I am trying to take pooled estimate and confidence limits out of the table as variables, without manually typing them in. Here is what I typed into stata to generate the output tables: meta loggeneff seloggeneff, eform graph(f) cline xline(1) xlab(.1,1,10) id(studygen) b2title(gender-specific estimates) print Here are the output tables: Meta-analysis (exponential form) | Pooled 95% CI Asymptotic No. of Method | Est Lower Upper z_value p_value studies -------+---------------------------------------------------- Fixed | 1.068 1.038 1.099 4.489 0.000 2 Random | 1.073 0.989 1.165 1.689 0.091 Test for heterogeneity: Q= 8.025 on 1 degrees of freedom (p= 0.005) Moment-based estimate of between studies variance = 0.003 | Weights Study 95% CI Study | Fixed Random Est Lower Upper -------------------+---------------------------------------- Vesterinen Males | 2013.93 280.27 1.12 1.07 1.17 Vesterinen Females | 2646.46 289.91 1.03 0.99 1.07 How can I save the summary estimate and confidence limits from the analysis (random effects) to variables? I need to take these values and do some data management and additional analysis with them, and I do not want to hand-enter every estimate generated from the command.The help file for -meta- indicates that it saves the following results (copied directly from the help file): Saved values ------------ S_1 Theta (fixed) S_2 SE Theta (fixed) S_3 Lower CI Limit (fixed) S_4 Upper CI Limit (fixed) S_5 Asymptotic Z-value (fixed) S_6 Asymptotic p-value (fixed) S_7 Theta (random) S_8 SE Theta (random) S_9 Lower CI Limit (random) S_10 Upper CI Limit (random) S_11 Asymptotic Z-value (random) S_12 Asymptotic p-value (random) S_13 Between-studies Variance, tau^2

Which version of -meta- do you have, or maybe more to the point, which version of the help file do you have and where did you get it from? The above doesn't appear in the STB43 (sbe16.2) version:

. net from "http://www.stata.com/stb/stb43/";

Click on sbe16_2

In the Viewer, click on sbe16_2/meta.hlp

- there's nothing about Saved values. The above global macros are created by the sbe16.2 version of -meta- though (except I get S_0 rather than S_10).

I also just noticed that the v7 Stata manuals have an entry for [R] meta, which lists the various user-written programs. However, if you slavishly follow the example instructions given for installing

-meta-, you'll end up with an out-of-date version of -metap- instead!

Roger.

----------------------------------------------------

Roger Harbord mailto:roger.harbord@bristol.ac.uk

Department of Social Medicine, University of Bristol

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**References**:**st: RE: difficulty using META command and exporting output in Stata***From:*"Steichen, Thomas" <STEICHT@RJRT.com>

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