IBM Water System SPSS COMPLEX SAMPLES 19 User Manual
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Chapter 12
Options
Figure 12-12
Cox Regression dialog box, Options tab
Cox Regression dialog box, Options tab
Estimation.
These controls specify criteria for estimation of regression coefficients.
Maximum Iterations.
The maximum number of iterations the algorithm will execute. Specify a
non-negative integer.
Maximum Step-Halving.
At each iteration, the step size is reduced by a factor of 0.5 until the
log-likelihood increases or maximum step-halving is reached. Specify a positive integer.
Limit iterations based on change in parameter estimates.
When selected, the algorithm stops
after an iteration in which the absolute or relative change in the parameter estimates is less
than the value specified, which must be positive.
than the value specified, which must be positive.
Limit iterations based on change in log-likelihood.
When selected, the algorithm stops after an
iteration in which the absolute or relative change in the log-likelihood function is less than
the value specified, which must be positive.
the value specified, which must be positive.
Display iteration history.
Displays the iteration history for the parameter estimates and pseudo
log-likelihood and prints the last evaluation of the change in parameter estimates and pseudo
log-likelihood. The iteration history table prints every n iterations beginning with the 0th
log-likelihood. The iteration history table prints every n iterations beginning with the 0th