Table 1.
Demographic characteristics of the study population by residential proximity to environmental sources of POP (2002–2004), person-years (%).
| Population groups | POP | Non-POP | Total |
|---|---|---|---|
| Race: | |||
| African Americans | 279,804 (25.9) | 802,119 (74.1) | 1,081,923 (100.0) |
| Caucasians | 4,146,579 (24.3) | 12,885,081 (75.7) | 17,031,660 (100.0) |
| Age: | |||
| 25–34 years | 977,889 (25.1) | 2,913,609 (74.9) | 3,891,498 (100.0) |
| 35–44 years | 1,046,424 (24.3) | 3,262,539 (75.7) | 4,308,963 (100.0) |
| 45–54 years | 809,217 (22.9) | 2,717,067 (77.1) | 3,526,284 (100.0) |
| 55–64 years | 607,584 (23.7) | 1,954,566 (76.3) | 2,562,150 (100.0) |
| 65–74 years | 533,748 (25.5) | 1,557,114 (74.5) | 2,090,862 (100.0) |
| 75+ years | 451,521 (26.0) | 1,282,305 (74.0) | 1,733,826 (100.0) |
| Gender: | |||
| males | 2,077,314 (24.3) | 6,470,253 (75.7) | 8,547,567 (100.0) |
| females | 2,349,069 (24.6) | 7,216,947 (75.4) | 9,566,016 (100.0) |
| Total study population | 4,426,383 (24.4) | 13,687,200 (75.6) | 18,113,583 (100.0) |