[R] Green and Byar (1980) Prostate Cancer Data set from Andrews and Herzberg - Data

[Frank E Harrell Jr]

Rolf Turner wrote:
> 
> On 25/03/2009, at 12:09 PM, Frank E Harrell Jr wrote:
> 
>     <snip>
> 
>>> (2) Scrolling down to ``Byar and Green prostate cancer data'' appeared
>>> to get
>>> me to the right place.  But I couldn't see any signs of any ``R binary
>>> files''.
>>
>> Please look again.  It's under the heading "R".  Unfortunately I used
>> .sav suffix for save() files in the old days.
> 
>     Ah-ha.  Oh me of little faith.  I have been hanging around (in
>     my current work environment) with too many SPSS users, and the
>     *.sav extension seems to be the standard for SPSS data files.
>     Whence my corrupted thinking.

It definitely is a standard for SPSS, that's why I regret ever using 
that suffix.

> 
>> The .xls fine opened with no problem in OpenOffice; has 506 rows.
> 
>     Hmmm.  When I opened it with Excel on the Mac I got a spread
>     sheet with 503 rows --- the first row being the column names,
>     so there were really 502 rows.
> 
>     And 502 rows was what I got when I saved the *.xls file as a
>     *.csv file and then read that in.
> 
>     Also, when I followed Phil Spector's excellent advice and
>     loaded prostate.sav from the website, using load(), I ***again***
>     got a data frame of 502 rows.  This data frame is (modulo some
>     classes and attributes) identical with what I got from reading
>     from the *.csv file.

Sorry about that - I was looking at patient numbers.  I do get 502 rows 
either with load()'ing the binary data frame or opening the spreadsheet.

> 
>     Where have the other four rows gone?  Ravi Varadhan also observed
>     this phenomenon.
> 
>         cheers,
> 
>             Rolf
> 
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-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University