Table 1.
Patient Demographics Stratified by SES Quartile
| Median Household Income Quartile (267,621 patients) | ||||
|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | |
| Number of Patients | 83,714 | 68,932 | 62,413 | 52,562 |
| Mean Age, yr (interquartile range) | 40 (27–53)* | 41 (27–54) | 42 (28–54) | 43 (29–56) |
| Gender, n (%) | ||||
| Male | 60,813 (72.64)‡ | 48,382 (70.19) | 43,320 (69.41) | 35,102 (66.78) |
| Female | 22,901 (27.36) | 20,550 (29.81) | 19,093 (30.59) | 17,460 (33.22) |
| Race/Ethnicity, n (%) | ||||
| White | 44,790 (53.50)† |
48,968 (71.04) | 46,389 (74.33) | 40,836 (77.69) |
| Black | 19,719 (23.56) | 7,934 (11.51) | 5,063 (8.11) | 3,090 (5.88) |
| Hispanic | 14,593 (17.43) | 8,350 (12.11) | 7,508 (12.03) | 4,803 (9.14) |
| Asian or Pacific Islander | 825 (0.99) | 961 (1.39) | 1,056 (1.69) | 1,731 (3.29) |
| Native American | 974 (1.16) | 404 (0.59) | 244 (0.39) | 116 (0.22) |
| Other | 2,813 (3.36) | 2,315 (3.36) | 2,153 (3.45) | 1,986 (3.78) |
| Insurance Status, n (%) | ||||
| Medicare | 8,422 (10.06)‡ | 6,475 (9.39) | 5,339 (8.55) | 3,809 (7.25) |
| Medicaid | 15,710 (18.77) | 8,975 (13.02) | 6,245 (10.01) | 3,521 (6.70) |
| Private Insurance | 28,398 (33.92) | 30,740 (44.59) | 32,403 (51.92) | 33,847 (64.39) |
| Self-Pay | 18,727 (22.37) | 12,782 (18.54) | 9,572 (15.34) | 5,418 (10.31) |
| No Charge | 2,162 (2.58) | 1,217 (1.77) | 936 (1.50) | 404 (0.77) |
| Other | 10,295 (12.30) | 8,743 (12.68) | 7,918 (12.69) | 5,563 (10.58) |
*
p<0.05
†
p<0.01
‡
p<0.001