This website uses Cookies. Click Accept to agree to our website's cookie use as described in our Privacy Policy. Click Preferences to customize your cookie settings.
Accept
Reject
Preferences
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Choose Language Hide Translation Bar
Ceg1
Ceg1
Level II

Group homogeneity tests - difference when using right censor and interval censored data

Nov 6, 2023 10:36 AM (243 views)

Hi,

 

can you explain how JMP handles Group homogeneity tests (Logrank, Wilcoxon, Peto-Peto) with different type of event censoring? Are there any differences in methods used by JMP to calculate those tests under different event censoring?

 

I made a 2 populations comparisons in JMP platform Life Distribution - Compare Groups, using same dataset, but with different event censoring definition. For uncensored events, p-value for tests was around 10%, whereas for interval censored events tests' p-value dropped to 1%, which changes the analysis conclusion.

Below are JMP results:

Events Interval Censoring

Ceg1_0-1699274499731.png

 

Uncensored events

Ceg1_1-1699274532768.png

 

Additional question: For uncensored event case, sometimes in statistics summary table an unnamed column is added with term "Biased" in it. What does it mean in this context? I couldn't find any information on this in JMP documentation. 

 

Thank you for your help.

0 Kudos
1 REPLY 1
matimur1906
matimur1906
Level I

Re: Group homogeneity tests - difference when using right censor and interval censored data

Mar 7, 2024 09:33 AM (91 views)  |  Posted in reply to message from Ceg1 11-06-2023

Hello,

I am facing the same problem, does anyone know the answer?

Thank you,

MM

0 Kudos