Characteristic | Enrolled (n=661) | Not enrolled (n=550) | p Value (univariate)* | p Value (multivariable model) |
Successfully geocoded, n (%) | 652 (98.6) | 538 (97.8) | 0.28 | N/A |
White race | 56.1 (17.6–81.9) | 58.9 (19.8–83.9) | 0.26 | <0.01 |
Household income <US$30 000 | 28.1 (17.3–38.5) | 29.9 (18.9–42.1) | 0.03 | <0.01 |
Household income ≥US$60 000 | 41.1 (29.4–57.8) | 38.2 (25.1–53.8) | <0.01 | <0.01 |
Mean hours worked (annually) | 38.1 (36.8–39.3) | 38.0 (36.7–39.2) | 0.39 | 0.05 |
Disabled workers | 10.1 (7.5–13.5) | 11.2 (8.2–16.0) | <0.01 | <0.01 |
Working class | 60.3 (52.6–69.8) | 62.3 (52.5–69.8) | 0.36 | <0.01 |
Occupied houses | 92.4 (88.1–95.8) | 91.3 (86.4–94.7) | <0.01 | 0.07 |
SEP Index†, median (IQR) | 1.5 (−1.4–4.5) | 2.1 (−0.8–4.9) | 0.07 | N/A |
Unless otherwise noted, all measurements are the median per cent (IQR) by census tract.
*p Value is from Wilcoxon rank-sum test for continuous variables and from Fisher’s exact test for categorical variables.
†Socioeconomic Position Index. Higher value indicates higher level of deprivation.30
N/A, not applicable.