Dropping Non-Significant Predictors

The tests of model effects showed that the model coefficients for Gender and Voted in last election are not statistically significantly different from 0.

  1. To produce a reduced model, recall the Complex Samples Ordinal Regression dialog box.
  2. Click Continue in the Plan dialog box.
    Figure 1. Ordinal Regression dialog box
    Ordinal Regression dialog box
  3. In the Ordinal Regression dialog, deselect Gender and Voted in last election as factors.
  4. Click Options.
    Figure 2. Ordinal Regression Options dialog box
    Ordinal Regression Options dialog box
  5. In the Options dialog, select Display iteration history and leave the default increment of 1.

    The iteration history is useful for diagnosing problems encountered by the estimation algorithm.

  6. Click Continue.
  7. Click OK in the Complex Samples Ordinal Regression dialog box.

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