Please I have a dataset of 8000 clients linked to HIV treatment. There are 7 variables of interest and we are assessing loss to follow-up and missing data relationship. We plan to use Cox Proportional Hazard analysis. Lost to follow-up is the event of interest. Each of the 7 variables are missing in a proportion of the clients in the study. We have also created an 8th variable that categorized the dataset into clients with and without missing data. I intend on using SPSS for the analysis.
Please, as a note, all the clients missing any of the 7 variables will be excluded before including the variables in the model.
My question is, can I develop a valid cox model with LTFU as the dependent variable and the 7 variables as predictor variables and also include the 8th variable of the missing status as a predictor?
Please, as a note, all the clients missing any of the 7 variables will be excluded before including the variables in the model.
My question is, can I develop a valid cox model with LTFU as the dependent variable and the 7 variables as predictor variables and also include the 8th variable of the missing status as a predictor?