Table 1.
Characteristics of a cohort of patients seen at a federally qualified health center serving New Castle County, Delaware, USA between November 1, 2016 – June 30, 2019, overall and within catchment areas defined by three distance-based thresholds (75%, 80%, and 90% of patients).
| Characteristic | Overall (n=15,574) | 75th percentile (n=11,683) | 80th percentile n=12,459) | 90th percentile (n=14,017) |
|---|---|---|---|---|
|
| ||||
| Individual-level | ||||
| Age in yrs, median (IQR) | 38 (21) | 38 (22) | 38 (22) | 38 (21) |
| Sex, n (%) | ||||
| Female | 9,961 (64%) | 7,443 (64%) | 7,947 (64%) | 8,945 (64%) |
| Male | 5,613 (36%) | 4,240 (36%) | 4,512 (34%) | 5,072 (36%) |
| Race, n (%) | ||||
| White | 8,184 (55%) | 6,022 (53%) | 6,517 (54%) | 7,418 (55%) |
| Non-white | 6,819 (45%) | 5,307 (47%) | 5,557 (46%) | 6,131 (45%) |
| Ethnicity, n (%) | ||||
| Non-Hispanic | 7,850 (51%) | 6,013 (52%) | 6,340 (51%) | 7,015 (50%) |
| Hispanic | 7,603 (49%) | 5,572 (48%) | 6,017 (49%) | 6,890 (50%) |
| Insurance, n (%) | ||||
| Non-private | 6,460 (67%) | 5,202 (70%) | 5,453 (69%) | 5,970 (68%) |
| Private | 3,258 (33%) | 2,282 (30%) | 2,430 (31%) | 2,798 (32%) |
| Primary health center, n (%) | ||||
| Location A | 11,897 (76%) | 8,923 (76%) | 9,518 (76%) | 10,708 (76%) |
| Location B | 3,677 (24%) | 2,760 (24%) | 2,941 (24%) | 3,309 (24%) |
| Number of visits in past 2 years, median (IQR) | 3 (6) | 3 (6) | 3 (6) | 3 (6) |
| Days since last visit, median (IQR) | 233 (418) | 214 (413) | 218 (416) | 225 (416) |
| Diagnosis of chronic Hepatitis C virus infection, n (%) | 286 (2%) | 241 (2%) | 249 (2%) | 272 (2%) |
| Distance to federally qualified health center in mi., median (IQR) | 3 (5) | 2 (3) | 2 (3) | 3 (4) |
| ZIP code-level | ||||
| Density of bus stops per sq. mi., median (IQR) | 23 (24) | 27 (20) | 27 (20) | 23 (21) |
| Area deprivation indexa, mean (SD) | 0.4 (0.9) | 0.7 (0.9) | 0.6 (0.9) | 0.5 (0.9) |
SD, standard deviation; IQR, interquartile range
a
Operationalized as a Z-score composite of ZIP code-level 2017 American Community Survey 5-year estimates based on indicators of education, employment, income and poverty, and household composition.