Table 7.
Distance between Core and Excluded/Low-Completion Rate Participants on Five Demographic Measures.
| demographic measure | true dist. core-excl | bootstr. dist. 2.5th perc. core-excl | bootstr. dist. 97.5th perc. core-excl | true dist. core-lowCompl | bootstr. dist. 2.5th perc. core-lowCompl | bootstr. dist. 97.5th perc. core-lowCompl |
|---|---|---|---|---|---|---|
| age female | 15.267* | 2.824 | 7.339 | 15.088* | 1.598 | 4.002 |
| age male | 17.218* | 2.749 | 7.322 | 16.199* | 1.452 | 3.794 |
| party | 4.065 | 1.057 | 9.236 | 5.925 | 0.707 | 6.110 |
| education | 6.358 | 2.363 | 8.961 | 11.523* | 1.564 | 5.923 |
| race/ethnicity | 10.803* | 1.442 | 7.839 | 4.149 | 0.978 | 5.177 |
| income | 5.925 | 2.164 | 8.967 | 14.513* | 1.451 | 5.943 |
Bold distance values are significantly different (*p < 0.05; two sided) from the bootstrapped null distributions. NOTE: excl. = excluded; bootstr. = bootstrap; perc. = percentile; compl. = completion. See Fig. 5 for follow-up-comparisons across categories within age, education, race and ethnicity, and income.