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Appendix B: Notes for Tables and Figures Displaying Results Calculated with Administrative Records Data
Estimates were regression-adjusted using ordinary least squares, controlling for pre-random assignment characteristics of sample members.
Rounding may cause slight discrepancies in calculating sums and differences.
A two-tailed t-test was applied to differences between outcomes for the program and control groups. Statistical significance levels are indicated as: * = 10 percent; ** = 5 percent; and *** = 1 percent.
Italics indicate comparisons that are nonexperimental. These measures are computed only for sample members who were employed. Since there may be differences in the characteristics of program group and control group members who were employed, any differences in outcomes may not necessarily be attributable to the ERA program. Statistical tests were not performed.
Dollar averages include zero values for sample members who were not employed or were not receiving TANF or food stamps.
The p-value indicates the likelihood that the difference between the program and control group arose by chance.
Unless otherwise stated, results are for single-parent sample members randomly assigned from January 2002 to April 2003.
NA = not applicable.
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