O'Reilly logo

APPLIED MULTIVARIATE STATISTICS: WITH SAS® SOFTWARE by Dayanand N. Naik, Ravindra Khattree

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

6.6. Analysis in the Presence of Covariates

In many biological, medical and industrial applications, we often come across repeated measures data along with covariates that influence the response variable. It is important to account for the effects of such covariates. In clinical trials, the baseline measurements can be thought of as the useful covariates for analyzing response patterns at successive visits. For example, in therapies for the treatment of chronic stable angina, treadmill walking time (a covariate) is recorded just before the administration of a dose, and then at some post-dose times. The effectiveness of the visit doses is evaluated relative to the corresponding baseline walking times (Patel, 1986). Here the covariate information ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required