Table 4.
Logistic regression analyses for neighborhood haracteristics with outcome of bio-specimen research participation within addresses (yes/no), among 5,108 addresses approached in Chicago study sample. Models are adjusted for design, interviewer, household, and other neighborhood-level factors •
| Characteristic | 1+ participant within the address | OR | (95% CI) | |
|---|---|---|---|---|
| No | Yes | |||
| Local G* at Chicago level using 99,999permutations; pseudo P-value <0.0001 | ||||
| Neighborhood socioeconomic status (SES)1 | ||||
| Average | 2,484 | 1,944 | 1.00 | (Reference) |
| Low | 264 | 407 | 1.79 | (1.46–2.20) |
| High | - | <20 | ~ | |
| Local G* at Chicago level using 999permutations; pseudo P-value <0.05 | ||||
| Neighborhood SES 2 | ||||
| Average | 1,884 | 1,333 | 1.00 | (Reference) |
| Low | 710 | 954 | 2.23 | (1.91–2.60) |
| High | 154 | 73 | 0.30 | (0.21–0.42) |
| Quintiles at the Chicago level | ||||
| Neighborhood SES 3 | ||||
| Quintile 1 (Low) | 264 | 424 | 1.00 | (Reference) |
| Q2 | 578 | 771 | 1.23 | (0.96–1.57) |
| Q3 | 1,617 | 933 | 0.38 | (0.30–0.47) |
| Q4 | 289 | 217 | 0.51 | (0.37–0.69) |
| Q5 (High) | - | <20 | ~ | |
| Total | 2,748 | 2,360 | ||
Interviewer-level factors: interviewer with the majority approaches at the address unit level (age (continuous), sex, race/ ethnicity). Household-level factors: average potential participant characteristics at the address unit level (mean age (continuous), predominant race/ ethnicity (categorical), majority interviewer-household concordant on R/E (yes, no, no majority for household and/or interviewer)). Design factors: potential participants within addresses (continuous) and whether the address was in the original target sample from the vendor contact list (yes/no), using 2010 Census tract boundaries
Categories defined as cores or clusters of similar census tracts in geographic and feature space by Local G* statistic at the Chicago area level using 999 permutations test with pseudo P-value <0.05 and queen contiguity, using 2010 Census tract boundaries
Categories defined as cores or clusters of similar census tracts in geographic and feature space by Local G* statistic at the Chicago area level using 999 permutations test with pseudo P-value <0.05 and queen contiguity, using 2010 Census tract boundaries
Categories defined as quintiles of nSES at Chicago area level, using 2010 Census tract boundaries
Statistic suppressed due to cell frequency <20