Comparison of Selected Variables Across Three A2H Studies
In this section, we present a limited number of comparisons of selected descriptive variables collected across each of the four national studies sponsored by A2H: 1993, 1997, 2001, and the current study, 2005.
Because of differences in certain factors (including food bank coverage, survey questionnaire wording, survey response rates, sampling methods, application of sampling weights, and general variable definitions), data from 1993, 1997, 2001, and 2005 are not directly comparable. Nevertheless, as long as these limitations are kept in mind, it is of general interest to examine the trends over time for selected key variables as a preliminary step toward investigating potential system changes in the A2H national network.