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Re: st: AUC above a fixed value


From   Ronan Conroy <rconroy@rcsi.ie>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: AUC above a fixed value
Date   Tue, 26 Aug 2008 11:28:14 +0100

On 26 Aug 2008, at 08:46, alvine.bissery@chu-lyon.fr wrote:

I need to calculate a AUC of "hem"  with  8 time measurements

time    hem
0       116
1       97
2       101
3       114
6       125
12      121
18      118
24      128

But I need only AUC above the threshold of hem=110
gen hem_110 = (hem-110)*(hem > 110)

this multiplies all values where hem is <= 110 by zero.


Ronan Conroy
=================================

rconroy@rcsi.ie
Royal College of Surgeons in Ireland
Epidemiology Department,
Beaux Lane House, Dublin 2, Ireland
+353 (0)1 402 2431
+353 (0)87 799 97 95
+353 (0)1 402 2764 (Fax - remember them?)
http://www.flickr.com/photos/ronanconroy/sets/72157601895416740/

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