Table 1.
Characteristics of Study Population of 713 University of Chicago HIV Clinic Patients from January 1, 2008 through May 31, 2015.
| Characteristics | Value |
|---|---|
| Age at first visit in study period, Mean (SD) | 47.3 (13.6) |
| Female, No. (%) | 314 (44%) |
| Race | |
| African American, No. (%) | 585 (82%) |
| White, No. (%) | 93 (13%) |
| Other, No. (%) | 35 (5%) |
| Insurance | |
| Private, No. (%) | 312 (44%) |
| Medicaid, No. (%) | 309 (43%) |
| Medicare, No. (%) | 85 (12%) |
| Number of attended appointments, Mean (SD) | 19.5 (17) |
| Census-based Aggregates | |
| Fraction in zipcode that are African American, Mean (SD) | 0.81 (0.29) |
| Fraction in zipcode with less than $10 k income, Mean (SD) | 0.07 (0.04) |
| Fraction in zipcode with income between $10 k and $15 k, Mean (SD) | 0.03 (0.02) |
| Fraction in zipcode on SNAP, Mean (SD) | 0.14 (0.08) |
| Fraction in zipcode with high school education, Mean (SD) | 0.38 (0.14) |
| Fraction in zipcode with some college, Mean (SD) | 0.19 (0.06) |
| Fraction in zipcode with bachelors, Mean (SD) | 0.13 (0.09) |
| GIS measures | |
| Distance from residence to clinic (miles), Mean (SD) | 4.88 (3.65) |
| Travel time in minutes (public transit) from residence to clinic, Mean (SD) | 43.5 (19.4) |
| Travel time in minutes (car) from residence to clinic, Mean (SD) | 18.8 (10.7) |
| Average crime rate on route from from residence to clinic, Mean (SD) | 0.11 (0.03) |