Chapter
5
Complex Samples Frequencies
The Complex SamplesFrequencies procedure produces frequency tables for selected variables
and displays univariatestatistics. Optionally,you can request statistics by subgroups, defined by
one or more categorical variables.
Example. Using the Complex Samples Frequencies procedure, you can obtainunivariate tabular
statistics for vitamin usage among U.S. citizens, based on the results of the National Health
Interview Survey (NHIS) and witha n appropriateanalysis plan for this public-use data.
Statistics. The procedure produces estimates of cellpopulation sizes and table percentages,
plus standard errors, confidence intervals, coefficients of variation, design effects, square roots
of design effects, cumulativevalues, and unweighted counts for each estimate. Additionally,
chi-square andlikelihood-ratio statistics are computed for the test of equal cell proportions.
Data. Variablesfor which frequency tables are produced should be categori cal. Subpopulation
variables can be string or numeric butshould 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
EFrom the menus choose:
Analyze > Complex Samples > Frequencies...
ESelect a plan file. Optionally, select a custom joint probabilities file.
EClick Continue.
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