Talk:Kaplan-Meier estimator
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This entry needs more examples, possibly a sample calculation, and a review of the citation history of the original article. I can do it eventually but if anyone else is game, feel free...this is an important entry, so I think a little tutorial on how to do a KM estimation is in order. 63.250.186.17 16:27, 16 November 2005 (UTC)Theoriste
I am very unhappy with the definition of the product-limit estimator on this page. On the positive side, the definition uses fairly minimal notation, which is pretty clever (and I assume is the point).
On the negative side, this definition is undefined for t < t(1). That is, the survivor rate is obviously 100% before any subject has died, but the product limit expression is always less than 100% (since N/(N+1) is always less than 1). Perhaps more importantly, this definition has no obvious generalization to the case with right censoring. I much prefer definitions like this one, which I think are more standard.
I would just have edited the page, but I'm lazy, and I'm also very curious about where the definition on this page came from. Unless there are objections, I'm going to go ahead and change it. Ragout 04:50, 15 April 2006 (UTC)
