Quoting Marcello Pagano <[email protected]>:
> This method is fine as far as it goes, but it does have a negative bias.
> One, ad hoc, way to compensate for the bias is to add an exponential
> tail to the survival curve after the last censored observation. The
> area under this addition to the curve can be evaluated theoretically and
> thus tacked on to the area calculated by May. This estimator appears in
> a number of places. Do not ask me for statistical properties of this
> estimator.
>
> Just a suggestion.
>
The Stata command -stci- would be of use here.
Phil
--
Philip Ryan
Associate Professor
Department of Public Health
University of Adelaide
5005 South Australia
AUSTRALIA
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