| Characteristics . | Mean per Year, a n (%) . | Range (Minimum–Maximum) . |
|---|---|---|
| Medicareb | 1,219,614 | 1,174,633–1,274,441 |
| Age, y | 76 | 75–76 |
| Sex | ||
| Male | 508,825 (41.7) | 477,532–544,438 |
| Female | 710,789 (58.3) | 689,931–730,003 |
| Race | ||
| White | 1,010,493 (82.9) | 984,320–1,039,693 |
| Black | 95,587 (7.8) | 91,007–99,830 |
| Other | 113,534 (9.3) | 90,448–138,101 |
| Charlson-Deyo comorbidity index | 1.6 | 1.43–1.75 |
| Rural-urban continuumc | ||
| Metro | 1,026,731 (84.2) | 983,019–1,078,506 |
| Adjacent to metro | 107,770 (8.8) | 104,317–110,129 |
| Not adjacent to metro | 85,113 (7.0) | 82,503–86,000 |
| Education high school or abovec | 85.4 | 85.3–85.4 |
| Median household income, $c | 57,283 | 56,951–57,682 |
| Imaging | ||
| None | 1,095,294 (89.9) | 1,041,326–1,144,333 |
| Other imaging | 116,440 (9.5) | 65,344–211,632 |
| Thyroid ultrasound | 7,880 (0.6) | 1,967–21,483 |
| Characteristics . | Mean per Year, a n (%) . | Range (Minimum–Maximum) . |
|---|---|---|
| Medicareb | 1,219,614 | 1,174,633–1,274,441 |
| Age, y | 76 | 75–76 |
| Sex | ||
| Male | 508,825 (41.7) | 477,532–544,438 |
| Female | 710,789 (58.3) | 689,931–730,003 |
| Race | ||
| White | 1,010,493 (82.9) | 984,320–1,039,693 |
| Black | 95,587 (7.8) | 91,007–99,830 |
| Other | 113,534 (9.3) | 90,448–138,101 |
| Charlson-Deyo comorbidity index | 1.6 | 1.43–1.75 |
| Rural-urban continuumc | ||
| Metro | 1,026,731 (84.2) | 983,019–1,078,506 |
| Adjacent to metro | 107,770 (8.8) | 104,317–110,129 |
| Not adjacent to metro | 85,113 (7.0) | 82,503–86,000 |
| Education high school or abovec | 85.4 | 85.3–85.4 |
| Median household income, $c | 57,283 | 56,951–57,682 |
| Imaging | ||
| None | 1,095,294 (89.9) | 1,041,326–1,144,333 |
| Other imaging | 116,440 (9.5) | 65,344–211,632 |
| Thyroid ultrasound | 7,880 (0.6) | 1,967–21,483 |
Mean per year is the aggregate of the means of all 12 years at the patient level.
The cohort includes the 20% Medicare sample residing in the regional subgroups that correspond with SEER-Medicare counties.
Data are measured at the zip code level. All other variables are measured at the individual level.
| Characteristics . | Mean per Year, a n (%) . | Range (Minimum–Maximum) . |
|---|---|---|
| Medicareb | 1,219,614 | 1,174,633–1,274,441 |
| Age, y | 76 | 75–76 |
| Sex | ||
| Male | 508,825 (41.7) | 477,532–544,438 |
| Female | 710,789 (58.3) | 689,931–730,003 |
| Race | ||
| White | 1,010,493 (82.9) | 984,320–1,039,693 |
| Black | 95,587 (7.8) | 91,007–99,830 |
| Other | 113,534 (9.3) | 90,448–138,101 |
| Charlson-Deyo comorbidity index | 1.6 | 1.43–1.75 |
| Rural-urban continuumc | ||
| Metro | 1,026,731 (84.2) | 983,019–1,078,506 |
| Adjacent to metro | 107,770 (8.8) | 104,317–110,129 |
| Not adjacent to metro | 85,113 (7.0) | 82,503–86,000 |
| Education high school or abovec | 85.4 | 85.3–85.4 |
| Median household income, $c | 57,283 | 56,951–57,682 |
| Imaging | ||
| None | 1,095,294 (89.9) | 1,041,326–1,144,333 |
| Other imaging | 116,440 (9.5) | 65,344–211,632 |
| Thyroid ultrasound | 7,880 (0.6) | 1,967–21,483 |
| Characteristics . | Mean per Year, a n (%) . | Range (Minimum–Maximum) . |
|---|---|---|
| Medicareb | 1,219,614 | 1,174,633–1,274,441 |
| Age, y | 76 | 75–76 |
| Sex | ||
| Male | 508,825 (41.7) | 477,532–544,438 |
| Female | 710,789 (58.3) | 689,931–730,003 |
| Race | ||
| White | 1,010,493 (82.9) | 984,320–1,039,693 |
| Black | 95,587 (7.8) | 91,007–99,830 |
| Other | 113,534 (9.3) | 90,448–138,101 |
| Charlson-Deyo comorbidity index | 1.6 | 1.43–1.75 |
| Rural-urban continuumc | ||
| Metro | 1,026,731 (84.2) | 983,019–1,078,506 |
| Adjacent to metro | 107,770 (8.8) | 104,317–110,129 |
| Not adjacent to metro | 85,113 (7.0) | 82,503–86,000 |
| Education high school or abovec | 85.4 | 85.3–85.4 |
| Median household income, $c | 57,283 | 56,951–57,682 |
| Imaging | ||
| None | 1,095,294 (89.9) | 1,041,326–1,144,333 |
| Other imaging | 116,440 (9.5) | 65,344–211,632 |
| Thyroid ultrasound | 7,880 (0.6) | 1,967–21,483 |
Mean per year is the aggregate of the means of all 12 years at the patient level.
The cohort includes the 20% Medicare sample residing in the regional subgroups that correspond with SEER-Medicare counties.
Data are measured at the zip code level. All other variables are measured at the individual level.
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