TABLE 1.
Demographic characteristics of the individuals* in the cohort per year (2003-2009)
| Characteristics | 2003 (N = 8,135) | 2004 (N = 11,305) | 2005 (N = 14,658) | 2006 (N = 14,512) | 2007 (N = 15,684) | 2008 (N = 25,477) | 2009 (N = 26,161) |
|---|---|---|---|---|---|---|---|
| Age, mean (SD), y | 57.2 (6.8) | 56.8 (6.4) | 56.8 (6.4) | 56.7 (6.4) | 57.0 (6.3) | 56.8 (6.4) | 57.0 (6.3) |
| Gender | |||||||
| Male, No. (%) | 5,708 (70.2) | 7,957 (70.4) | 10,388 (70.9) | 10,405 (71.7) | 11,117 (70.9) | 18,376 (72.1) | 18,919 (72.3) |
| Region (No., %) | |||||||
| Northeast | 1,292 (15.9) | 1,222 (10.8) | 1,620 (11.1) | 1,783 (12.3) | 1,762 (11.2) | 4,123 (16.2) | 3,399 (13.0) |
| North Central | 1,881 (23.1) | 2,566 (22.7) | 3,484 (23.8) | 3,829 (26.4) | 4,097 (26.1) | 7,958 (31.2) | 8,307 (31.8) |
| South | 2,886 (35.5) | 4,636 (41.0) | 6,111 (41.7) | 6,347 (43.7) | 6,905 (44.0) | 9,688 (38.0) | 10,474 (40.0) |
| West | 2,041 (25.1) | 2,787 (24.7) | 3,325 (22.7) | 2,454 (16.9) | 2,847 (18.2) | 3,617 (14.2) | 3,934 (15.0) |
| Plan (No., %) | |||||||
| Comprehensive | 1,403 (17.4) | 1,528 (13.7) | 1,550 (10.8) | 1,335 (9.4) | 680 (4.4) | 1,320 (5.3) | 961 (3.8) |
| HMO | 1,965 (24.3) | 2,145 (19.2) | 2,974 (20.6) | 2,079 (14.7) | 2,189 (14.3) | 4,384 (17.6) | 3,673 (14.4) |
| POS | 720 (8.9) | 1,313 (11.8) | 1,589 (11.0) | 1,545 (10.9) | 1,700 (11.1) | 2,137 (8.6) | 1,918 (7.5) |
| PPO | 3,655 (45.3) | 5,731 (51.3) | 7,784 (54.0) | 8,648 (61.2) | 10,145 (66.2) | 16,179 (64.8) | 17,972 (70.4) |
*
Characteristics are provided at the individual level per year, so column totals add to less than 183,308
Abbreviations: SD, Standard Deviation; HMO, Health Maintenance Organization; POS, Point of Service; PPO, Preferred Provider Organization