TABLE 2—
Prevalence of HCV Infection, Prevalence of Undiagnosed HCV, and Proportion of Undiagnosed HCV, by Demographic Characteristics, in an Emergency Department Population in New York City: 2015
| HCV Infectiona,b |
Prevalence of HCV Infectiona |
Prevalence of Undiagnosed HCV |
Proportion of Undiagnosed HCV |
|||||||
| Characteristic | Total No. (Column %) | Diagnosed, No. | Undiagnosed, No. | Subtotal, No. | No. Infected/Total No., % (95% CI) | P | No. Undiagnosed/Total No., % (95% CI) | P | No. Undiagnosed/Total No. HCV Infected, % (95% CI) | P |
| Total | 4989 (100.0) | 158 | 38 | 196 | 3.9 (2.8, 5.1) | 0.8 (0.3, 1.3) | 19.2 (11.4, 27.0) | |||
| Gender | ||||||||||
| Male | 1925 (38.6) | 60 | 16 | 77 | 6.2 (4.4, 8.1) | 1.2 (0.3, 2.0) | 21.0 (11.5, 30.5) | |||
| Female | 3064 (61.4) | 97 | 22 | 120 | 2.5 (1.5, 3.5) | < .001 | 0.5 (0.2, 0.9) | .05 | 18.1 (7.8, 28.5) | .64 |
| Age, y | ||||||||||
| 21–29 | 796 (16.0) | 0 | 3 | 3 | 0.4 (0.0, 0.8) | 0.3 (0.0, 0.6)c | 34.7 (6.3, 63.1)c | |||
| 30–39 | 770 (15.4) | 8 | 2 | 9 | 1.2 (0.4, 2.1) | .06 | ||||
| 40–49 | 779 (15.6) | 16 | 2 | 18 | 2.3 (1.2, 3.5) | .87 | 0.5 (0.0, 1.1)c | .62c | 11.6 (1.7, 21.6)c | .04c |
| 50–59 | 984 (19.7) | 52 | 8 | 60 | 6.1 (3.6, 8.6) | < .001 | ||||
| 60–69 | 842 (16.9) | 62 | 15 | 77 | 9.1 (6.3, 12.0) | < .001 | 1.5 (0.6, 2.3)c | < .001c | 22.9 (13.9, 32.0)c | .76c |
| 70–79 | 564 (11.3) | 18 | 9 | 27 | 4.7 (2.6, 6.8) | < .001 | ||||
| 80–85 | 254 (5.1) | 1 | 1 | 2 | 1.0 (0.0, 2.2) | .14 | ||||
| Year of birth | ||||||||||
| 1929–1944 | 805 (16.1) | 19 | 9 | 28 | 3.5 (2.0, 5.1) | 1.2 (0.3, 2.0) | 33.0 (15.4, 50.6) | |||
| 1945–1965 | 1904 (38.2) | 116 | 23 | 139 | 7.3 (5.0, 9.6) | < .001 | 1.2 (0.4, 2.0) | .03 | 16.3 (8.5, 24.0) | .17 |
| 1966–1994 | 2283 (45.8) | 22 | 6 | 28 | 1.2 (0.7, 1.8) | < .001 | 0.3 (0.0, 0.6) | .01 | 19.8 (0.2, 39.4) | .67 |
| Race/ethnicity | ||||||||||
| Black | 1604 (32.2) | 60 | 14 | 74 | 4.6 (3.1, 6.1) | 0.9 (0.3, 1.4) | 18.4 (9.3, 27.6) | |||
| Hispanic | 2665 (53.4) | 80 | 21 | 101 | 3.8 (2.4, 5.1) | .70 | 0.8 (0.1, 1.5) | .72 | 19.9 (7.2, 32.6) | .80 |
| White | 316 (6.3) | 8 | 1 | 9 | 3.0 (0.9, 5.1) | .49 | 0.3 (0.0, 1.8) | .40 | 10.8 (0.0, 31.3) | .50 |
| Other or unknown | 404 (8.1) | 10 | 3 | 13 | 3.1 (1.4, 4.8) | .58 | 0.7 (0.2, 2.2) | .72 | 24.0 (0.2, 47.8) | .50 |
Note. CI = confidence interval.
a
HCV infection: HCV RNA viral load ≥ 15 IU/mL.
b
Sum may not equal total because of rounding of multiple imputation results.
c
Age groups 21–29 and 30–39 years, 40–49 and 50–59 years, and 60–69, 70–79 and 80–85 years were collapsed because of the small number of undiagnosed HCV infections.