Complex Samples Frequencies
The Complex Samples Frequencies procedure produces frequency tables for selected variables and displays univariate statistics. Optionally, you can request statistics by subgroups, defined by one or more categorical variables.
Example. Using the Complex Samples Frequencies procedure, you can obtain univariate tabular statistics for vitamin usage among U.S. citizens, based on the results of the National Health Interview Survey (NHIS) and with an appropriate analysis plan for this public-use data.
Statistics. The procedure produces estimates of cell population sizes and table percentages, plus standard errors, confidence intervals, coefficients of variation, design effects, square roots of design effects, cumulative values, and unweighted counts for each estimate. Additionally, chi-square and likelihood-ratio statistics are computed for the test of equal cell proportions.
Complex Samples Frequencies Data Considerations
Data. Variables for which frequency tables are produced should be categorical. Subpopulation variables can be string or numeric but should be categorical.
Assumptions. The cases in the data file represent a sample from a complex design that should be analyzed according to the specifications in the file selected in the Complex Samples Plan dialog box.
Obtaining Complex Samples Frequencies
This feature requires the Complex Samples option.
- From the menus choose:
- Select a plan file. Optionally, select a custom joint probabilities file.
- Click Continue.
- In the Complex Samples Frequencies dialog box, select at least one frequency variable.
Optionally, you can specify variables to define subpopulations. Statistics are computed separately for each subpopulation.
This procedure pastes CSTABULATE command syntax.