![Home](http://my.ilstu.edu/~oakman/dataanalysis/_derived/home_cmp_copy-of-blank010_hbtn.gif)
![Up](http://my.ilstu.edu/~oakman/dataanalysis/_derived/up_cmp_copy-of-blank010_hbtn.gif)
![Censored](http://my.ilstu.edu/~oakman/dataanalysis/_derived/censored2.htm_cmp_copy-of-blank010_hbtn_p.gif)
![Uncensored](http://my.ilstu.edu/~oakman/dataanalysis/_derived/uncensored2.htm_cmp_copy-of-blank010_hbtn.gif)
Cox Proportional Hazard Model
In some situations, especially medical research, it may be necessary to create a model before the final outcome is know for every individual. Therefore, this model allows the variables to vary with time. The calculations for this method are complex and generally require statistical software, so they will not be addressed here.