Posts Tagged ‘ Stata ’

Example 7.39: Nelson-Aalen estimate of cumulative hazard

May 31, 2010
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Example 7.39: Nelson-Aalen estimate of cumulative hazard

In our previous example, we demonstrated how to calculate the Kaplan-Meier estimate of the survival function for time to event data. A related quantity is the Nelson-Aalen estimate of cumulative hazard. In addition to summarizing the hazard incurred ...

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What Social Network Analysis software do you use?

May 12, 2010
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What Social Network Analysis software do you use?

See a the poll here by Gabriel Rossman at Code and Culture. I voted for R and ‘igraph’. If you use R you are getting access to all the other wonderful things that come with R. Using specialized package, like Pajek, UCINET etc requires constant going back and forth between network software and some other

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An article attacking R gets responses from the R blogosphere – some reflections

April 16, 2010
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An article attacking R gets responses from the R blogosphere – some reflections

In this post I reflect on the current state of the R blogosphere, and share my hopes for the future

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Happy Birthday GGD! The 10 Most Popular Posts Since GGD’s Launch

February 23, 2010
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The first post on Getting Genetics Done was one year ago today. To celebrate, here are the top 10 most viewed posts since GGD launched last year. Incidentally, nine of the ten are tutorials on how to do something in R. Thanks to all the readers and all...

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Generalized linear mixed effect model problem

February 16, 2010
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Generalized linear mixed effect model problem

I am trying to compare cohort difference in infant mortality using generalized linear mixed model. I first estimated the model in Stata:xi:xtlogit inftmort i.cohort, i(code)which converged nicely:Fitting comparison model:Iteration 0:   log likelih...

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Using the “foreign” package for data conversion

October 27, 2009
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Using the “foreign” package for data conversion

I was in a rush to convert a SPSS data into Stata format. Somehow my Stattransfer v.8 for Linux was lost and I did not want pause my work and go back to Windows just to get this one file converted. So fire Emacs+ESS+R, load the "foreign" package, did t...

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Comparison of plots using Stata, R base, R lattice, and R ggplot2, Part I: Histograms

September 21, 2009
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One of the nicer things about many statistics packages is the extremely granular control you get over your graphical output.  But I lack the patience to set dozens of command line flags in R, and I'd rather not power the computer by pumping the mouse trying to set all the clicky-box options in Stata's graphics editor.  I want something...

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High tech, low tech?

August 15, 2009
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High tech, low tech?

Interesting article: http://www.iq.harvard.edu/blog/sss/archives/2006/01/tools_for_resea.shtml

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Side by side analyses in Stata, SPSS, SAS, and R

June 15, 2009
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I've linked to UCLA's stat computing resources once before on a previous post about choosing the right analysis for the questions your asking and the data types you have. Here's another section of the same website that has code to run an identical analysis in all of these statistical packages, with examples to walk through (as they note...

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Documentation and tutorial roundup

June 4, 2007
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Documentation and tutorial roundup

I recently lost my documentation folder (oops), so I had to go online and retrieve the documentation files and tutorials that I find indispensible for working. I decided I’d save myself and everyone else the trouble by posting the list here. All of the files are available in PDF format. All R manuals Scilab documentation.

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