[R] Re: R-help Digest, Vol 9, Issue 11

[David Duffy]

Tony Rossini wrote:
>
> For various reasons, I spent part of my time today looking at sample
> size and power calculation tools (don't ask, don't tell...).  This
> seems to be one area that R is incredibly weak in (well, nearly all
> stat packages, except perhaps specialized tools and SAS); sure, there
> are a number of functions in various packages:
>
>           base, statmod, Hmisc
>
> Have I missed something?  (I would've expected at least one sequential
> computation, or non-standard design, but apparently there are none, or
> I missed it).
>
David Clayton has a couple of little functions on his website, one for
sequential analysis IIRC.  I have some on my website for genetic
association (TDT and case-control) and linkage (variance components)
analysis.


| David Duffy (MBBS PhD)                                         ,-_|\
| email: davidD at qimr.edu.au  ph: INT+61+7+3362-0217 fax: -0101  /     *
| Epidemiology Unit, Queensland Institute of Medical Research   \_,-._/
| 300 Herston Rd, Brisbane, Queensland 4029, Australia  GPG 4D0B994A v