TABLE 1.
Demographic characteristics of the study population, by hepatitis C virus status, United States, 1991–2003
| HCV+* (no.) |
HCV−* (no.) |
All subjects |
||
|---|---|---|---|---|
| No. | % | |||
| All subjects | 10,259 | 10,259 | 20,518 | |
| Sex | ||||
| Male | 6,627 | 6,627 | 13,254 | 65 |
| Female | 3,632 | 3,632 | 7,264 | 35 |
| Age group (years) | ||||
| <30 | 1,435 | 1,435 | 2,870 | 14 |
| 30–39 | 4,051 | 4,051 | 8,102 | 39 |
| 40–49 | 3,548 | 3,548 | 7,096 | 35 |
| 50–59 | 860 | 860 | 1,720 | 8 |
| >59 | 365 | 365 | 730 | 4 |
| Race/ethnicity† | ||||
| White | 960 | 1,029 | 1,989 | 73† |
| Black | 137 | 78 | 215 | 8† |
| Hispanic | 166 | 109 | 275 | 10† |
| Asian | 51 | 113 | 164 | 6† |
| Other/not available | 48 | 33 | 81 | 3† |
|
|
||||
| HCV+ |
HCV− |
All subjects |
||||
|---|---|---|---|---|---|---|
| Median ($) |
Mean (%) |
Median ($) |
Mean (%) |
Median ($) |
Mean (%) |
|
| Income in home ZIP Code*,‡ | 35,699 | 36,301 | 35,917 | |||
| Educational attainment in home ZIP Code‡ |
||||||
| High school or higher | 76.70 | 77.23 | 76.96 | |||
| Bachelor's degree or higher | 20.40 | 21.12 | 20.76 | |||
*
HCV+, hepatitis C virus antibody positive; HCV−, hepatitis C virus antibody negative; ZIP Code, Zone Improvement Plan Code.
†
Race/ethnicity data were available from only 1,362 HCV+ and 1,362 HCV− subjects at one blood center. They are included only to indicate the degree of race/ethnicity imbalance in the two groups that remained after ZIP Code matching.
‡
Differences between the two groups were attributable to three-digit instead of five-digit ZIP Code matches in a minority of subjects.