Building a model
In order to build a model, we will incorporate all regular predictors as well as predictors that have a lesser value of p (0.3-0.35). As methodux consists of three steps, the preceding predictor will be incorporated along with a dummy variable as well as methodux1 as a reference. A dummy variable can be formed through the xi command with Toxiq:
Toxiq age metfordrug j.sets 1.metho, Lsssdzc
Fail_c: patient response
Analysis_tm: time
Iteration 0: log Likelihood = - 38645.678, Iteration 1: log Likelihood = -38546.876
Iteration 2: log Likelihood = -38546.956, Iteration 3: log Likelihood = -38546.567
Refined estimate: Iteration 0: Log Likelihood = -38456,567
Cox regression -- Breslow method
Total subjects- 520
Total observations – 520
Failures – 294
Risk time – 13259
Log likelihood - -38456.567 LRRRchiiirl(3) – 36.90
Prob> chiiiir(3) = 0|
t_time |
Coefficient |
Standard Error |
y |
P> !y! |
[ 93% Conff interval] |
|---|---|---|---|---|---|
|
age |
-0.12456 ... |