TABLE 1—
County-Level Socioeconomic Characteristics of 97 Kentucky Counties Overall and by Quartiles of County Hepatitis A Case Rates per 100 000 People Occurring During the 2017–2018 Outbreak
| Overall | Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | |
| No. of counties | 97 | 24 | 24 | 25 | 24 |
| No. of hepatitis A cases per 100 000 (IQR) | 57.8 (27.5–149.8) | 16.5 (2.1–27.0) | 39.3 (27.5–57.5) | 82.4 (57.8–149.8) | 241.1 (153.4–474.3) |
| County median age, y (SD) | 40.3 (2.9) | 41.3 (3.6) | 39.3 (3.2) | 40.4 (2.1) | 40.3 (2.6) |
| % White, median (SD) | 96.4 (4.8) | 94.6 (5.0) | 93.6 (5.3) | 96.7 (5.2) | 97.8 (1.7) |
| % of families that are married householders, mean (SD) | 74.5 (4.4) | 76.8 (3.4) | 75.1 (4.0) | 74.1 (5.1) | 72.2 (3.7) |
| % of families with single-male heads of households, mean (SD) | 7.2 (1.7) | 6.2 (1.3) | 7.5 (1.9) | 7.4 (1.6) | 7.8 (1.8) |
| % of families with single-female heads of households, mean (SD) | 18.2 (3.5) | 17.0 (3.1) | 17.4 (3.2) | 18.5 (4.1) | 20.0 (2.8) |
| % of men who are married, mean (SD) | 53.4 (5.0) | 56.1 (3.6) | 53.3 (5.2) | 53.9 (4.7) | 50.5 (4.8) |
| % of women who are married, mean (SD) | 50.9 (4.7) | 52.4 (4.1) | 51.9 (4.9) | 49.8 (4.9) | 49.6 (4.7) |
| % educational attainment < ninth grade, mean (SD) | 9.0 (4.2) | 8.4 (3.7) | 7.1 (3.5) | 8.7 (4.1) | 11.7 (4.1) |
| % high-school graduate or higher, mean (SD) | 80.3 (6.6) | 81.5 (5.6) | 82.7 (6.1) | 80.8 (6.3) | 76.1 (6.7) |
| % of grandparents responsible for grandchildren, mean (SD) | 57.0 (11.5) | 54.2 (9.9) | 56.9 (13.2) | 53.8 (10.3) | 63.5 (10.4) |
| % with disability among noninstitutionalized civilians, median (SD) | 19.6 (5.8) | 19.0 (5.0) | 17.5 (4.9) | 20.5 (6.1) | 22.4 (5.7) |
| % with different residence than previous year, mean (SD) | 13.2 (3.7) | 11.8 (3.0) | 14.7 (4.2) | 12.5 (3.9) | 13.8 (2.9) |
| % in manufacturing industry, mean (SD) | 16.2 (6.8) | 19.5 (6.3) | 17.6 (6.2) | 16.4 (7.3) | 12.5 (6.7) |
| % in arts, entertainment, recreation, accommodation, and food services industries, mean (SD) | 7.2 (2.4) | 6.5 (2.4) | 7.7 (2.4) | 7.0 (2.6) | 7.0 (2.6) |
| % in construction industry, mean (SD) | 7.2 (2.3) | 7.7 (2.5) | 7.3 (2.5) | 7.1 (2.5) | 7.3 (2.3) |
| % in agriculture, forestry, hunting and fishing, and mining industries, median (SD) | 3.1 (3.4) | 3.4 (2.8) | 3.0 (3.0) | 3.1 (2.9) | 3.3 (4.6) |
| % of population with income below poverty line, median (SD) | 20.4 (7.6) | 21.9 (5.8) | 18.8 (7.6) | 19.1 (7.6) | 26.1 (6.9) |
| Gini index of income inequality,a mean (SD) | 0.46 (0.03) | 0.45 (0.03) | 0.46 (0.04) | 0.46 (0.04) | 0.47 (0.03) |
Note. IQR = interquartile range.
a
Gini Index ranges from 0 to 1.