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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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344 CSSELECT<br />

• The ALL keyword can be used to drop all variables.<br />

• An error occurs if a specified variable does not exist in the working data file.<br />

JOINTPROB Subcommand<br />

First stage joint inclusion probabilities are automatically saved to an external file when the<br />

plan file specifies a PPS without-replacement sampling method. By default the joint probabilities<br />

file is given the same name as the plan file (with a different extension) and is written<br />

to the same location. JOINTPROB is used to override the default name and location of the file.<br />

• OUTFILE specifies the name of the file. In general, if the file exists it is overwritten without<br />

warning.<br />

• The joint probabilities file is generated only when the plan file specifies PPS_WOR,<br />

PPS_BREWER, PPS_SAMPFORD, or PPS_MURTHY as the sampling method A warning is<br />

generated if JOINTPROB is used when any other sampling method is requested in the plan<br />

file.<br />

SELECTRULE Subcommand<br />

The SELECTRULE subcommand generates a text file containing a rule that describes characteristics<br />

of selected units.<br />

• The selection rule is not generated by default.<br />

• OUTFILE specifies the name of the file. If the file exists it is overwritten without warning.<br />

• The selection rule is written in generic notation e.g., ‘(a EQ 1) AND (b EQ 2)’. You can<br />

transform the selection rule into SQL code or SPSS syntax that can be used to extract a<br />

subframe for the next stage of a multistage extraction.<br />

PRINT Subcommand<br />

The PRINT subcommand controls output display.<br />

SELECTION Summarizes the distribution of selected cases across strata. The information<br />

is reported per design stage. The table is shown by default.<br />

CPS Displays a case processing summary.

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