Table 1.
Characteristics of Study Population
| Characteristic | Unweighted N | Weighted N (%) |
|---|---|---|
| Age, mean (SD) | -- | 43.2 (0.58) |
| Sex | ||
| Male | 741 | 2733333 (55) |
| Female | 600 | 2223111 (44) |
| Race/ethnicity | ||
| White, Non-Hispanic | 1045 | 3910766 (79) |
| Hispanic | 153 | 501395 (10) |
| Black/Other, Non-Hispanic | 143 | 544283 (10) |
| Primary Payer | ||
| Private | 687 | 2655266 (56) |
| Medicare | 154 | 572476 (12) |
| Medicaid | 170 | 556907 (12) |
| Self-pay/other | 261 | 934213 (20) |
| Region | ||
| Northeast | 290 | 872739 (18) |
| Midwest | 310 | 1127245 (23) |
| South | 492 | 2001262 (40) |
| West | 249 | 955198 (19) |
| Year | ||
| 2007 | 355 | 1243701 (25) |
| 2008 | 310 | 1226116 (25) |
| 2009 | 339 | 1311817 (26) |
| 2010 | 337 | 1174810 (24) |
| Educationa | ||
| Quartile 1 | 371 | 1445058 (31) |
| Quartile 2 | 298 | 1127320 (24) |
| Quartile 3 | 316 | 1095093 (24) |
| Quartile 4 | 287 | 968250 (21) |
| Household Income | ||
| Quartile 1 | 300 | 1138142 (25) |
| Quartile 2 | 307 | 1094107 (24) |
| Quartile 3 | 347 | 1292451 (28) |
| Quartile 4 | 318 | 1111021 (24) |
| Poverty Level in ZIP | ||
| < 5% | 274 | 1001206 (22) |
| 5–9.99% | 400 | 1455914 (31) |
| 10–19.99% | 401 | 1413158 (30) |
| ≥ 20% | 197 | 765443 (17) |
| MSA | ||
| No | 187 | 852158 (17) |
| Yes | 1154 | 4104286 (83) |
a
% adults with Bachelor’s degree in patient’s ZIP code, quartile