Example 83.1 Two-Way Tables

This example uses the SIS_Survey data set from the section Getting Started: SURVEYFREQ Procedure. The data set contains results from a customer satisfaction survey for a student information system (SIS).

The following PROC SURVEYFREQ statements request a two-way table for Department by Response and customize the crosstabulation table display:

   proc surveyfreq data=SIS_Survey;
      tables  Department * Response / cv deff nowt nostd nototal;
      strata  State NewUser / list;
      cluster School;
      weight  SamplingWeight;
   run;

The TABLES statement requests a two-way table of Department by Response. The CV option requests coefficients of variation for the percentage estimates. The DEFF option requests design effects for the percentage estimates. The NOWT option suppresses display of the weighted frequencies, and the NOSTD option suppresses display of standard errors for the estimates. The NOTOTAL option suppresses the row totals, column totals, and overall totals.

The STRATA, CLUSTER, and WEIGHT statements provide sample design information for the procedure, so that the analysis is done according to the sample design used for the survey. The STRATA statement names the variables State and NewUser, which identify the first-stage strata. The LIST option in the STRATA statement requests a "Stratum Information" table. The CLUSTER statement names the variable School, which identifies the clusters or primary sampling units (PSUs). The WEIGHT statement names the sampling weight variable.

Output 83.1.1 displays the "Data Summary" and "Stratum Information" tables produced by PROC SURVEYFREQ. The "Stratum Information" table lists the six strata in the survey and shows the number of observations and the number of clusters, or schools, in each stratum.