BookmarkSubscribeRSS Feed
bollibompa
Quartz | Level 8

Hi,

 

I am performing a PS-matched comparative effectiveness study of two drugs (A and B). I have data for 3 years and I want to estimate PS based on data for these years. PS are estimated based on covarites before initiating treatment A or B.

During this period a subject initially treated with drug A may have switched to drug B during this time-period of three years. This subject may thefore exist in the data both treated with drug A and with drug B (but with different covarites before before initiation of A and B). They are probably not independed.

 

Have anyone experience of estimating propensity score (PS) where the same subject may occur two times?

Is it possible? Mixed-effect logistic regression?

(I am just curious about the estimation of PS, the estimated treatment effect I will handle at a later stage)

 

 

Thanks in advance!

Thomas

 

sas-innovate-2024.png

Join us for SAS Innovate April 16-19 at the Aria in Las Vegas. Bring the team and save big with our group pricing for a limited time only.

Pre-conference courses and tutorials are filling up fast and are always a sellout. Register today to reserve your seat.

 

Register now!

What is ANOVA?

ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.

Find more tutorials on the SAS Users YouTube channel.

Discussion stats
  • 0 replies
  • 1228 views
  • 0 likes
  • 1 in conversation