SCREENING subcommand (SELECTPRED command)

The SCREENING subcommand specifies settings for the screening step, which excludes unsuitable predictors.

STATUS=option. Perform the screening step. Valid options are ON or OFF. If OFF is specified, any other SCREENING specifications are ignored. The default value is ON.

PCTMISSING=number. Percentage of missing values in a predictor. If the percentage of cases representing a single category in a predictor is greater than the specified value, the predictor is excluded. The specified value must be a positive number that is less than or equal to 100. The default value is 70.

PCTEQUAL=number. Percentage of cases representing a single category in a categorical predictor. If the percentage of cases representing a single category in a predictor is greater than the specified value, the predictor is excluded. This setting applies only to categorical predictors. The specified value must be a positive number that is less than or equal to 100. The default value is 95.

PCTUNEQUAL=number. Percentage of categories containing one case in a categorical predictor. If the percentage of a predictor's categories containing only one case is greater than the specified value, the predictor is excluded. This setting applies only to categorical predictors. The specified value must be a positive number that is less than or equal to 100. The default value is 90.

STDDEV=number. Minimum standard deviation for a scale predictor. If the standard deviation is less than the specified value, the predictor is excluded. This setting applies only to scale predictors. The specified value must be a non-negative number. The default value is 0, which turns off the standard deviation check.

CV=number. Coefficient of variation for a scale predictor. A predictor's coefficient of variation is defined as its standard deviation divided by its mean. If the absolute value of the coefficient of variation is less than the specified value, the predictor is excluded. This setting applies only to scale predictors and applies only if the mean is not equal to 0. The specified value must be a positive number. The default value is 0.001.