Bioequivalence and Bioavailability Forum

Main page Policy/Terms of Use Abbreviations Latest Posts

 Log-in |  Register |  Search

Back to the forum  Query: 2018-01-19 23:47 CET (UTC+1h)
 

Mathematical wizard - use WinNonlin Tools menu instead [Bioanalytics]

posted by SDavis Homepage - UK, 2009-01-22 11:56  - Posting: # 3108
Views: 15,086

Hi Helmut,

» WinNonlin 5.2.1
»   STDEV(90000001;90000002;90000003) = 0

Just saw your post on this - I managed to replicate it in a workbook using a cell formula, however this is not how I'd recommend people perform such data manipulations in WinNonlin.

Performing the same calculation using either Descriptive Stats or the summary stats within Table Wizard will give you the correct answer i.e. 1. (as indeed will your worked example of calculating it without using the SD function).

I would recommend any WinNonlin users to use the Tools functions I described above since the 'grid' calculations come from, I think FormulaOne, which is a third party tool we use that seems to be susceptible to this error. Incidentally I don't think this should be a problem with Version 6 since it's not using this data grid anymore.

Cheers,
Simon

Simon
Senior Scientific Consultant
Pharsight - A Certara™ Company
Simon Davis at LinkedIn
Forthcoming meetings and training
Problems are not stop signs, they are guidelines. Robert H. Schuller

Complete thread:

Back to the forum Activity
 Mix view
Bioequivalence and Bioavailability Forum | Admin contact
17,720 Posts in 3,785 Threads, 1,104 registered users;
23 users online (0 registered, 23 guests).

No matter what side of the argument you are on,
you always find people on your side
that you wish were on the other.    Thomas Berger

The BIOEQUIVALENCE / BIOAVAILABILITY FORUM is hosted by
BEBAC Ing. Helmut Schütz
XHTML/CSS RSS Feed