Table 1.
Patient demographics and clinical characteristics at baseline (n = 21,490)
| Characteristic | No. (%) |
|---|---|
| Sex | |
| Male | 13,467 (63) |
| Female | 8,024 (37) |
| Race | |
| Caucasian | 18,742 (87) |
| African-American | 1,613 (8) |
| Other | 1,135 (5) |
| Comorbidity score | |
| 0 | 17,063 (79) |
| 1 | 3,581 (17) |
| ≥2 | 846 (4) |
| Insurance | |
| Not insured | 1,019 (5) |
| Private payer | 11,151 (52) |
| Government | 9,069 (42) |
| Unrecorded | 251 (1) |
| Education (%) | |
| ≥29 | 3,304 (15) |
| 20–28.9 | 5,635 (26) |
| 14–19.9 | 7,216 (34) |
| <14 | 5,198 (24) |
| Unrecorded | 137 (1) |
| Treatment facility type | |
| Community cancer program | 1,725 (8) |
| Comprehensive community cancer program | 9,152 (43) |
| Academic/research program | 9,588 (45) |
| Unrecorded | 1,025 (4) |
| Treatment facility location | |
| Metro | 16,775 (78) |
| Urban | 3,645 (17) |
| Rural | 551 (3) |
| Unrecorded | 519 (2) |
| Income (USD) | |
| <30,000 | 3,573 (17) |
| 30,000–35,000 | 5,286 (24) |
| 35,000–45,999 | 5,954 (27) |
| >46,000 | 6,524 (30) |
| Unrecorded | 153 (2) |
| Distance to treatment facility (miles) | |
| ≤11 | 10,798 (51) |
| >11 | 10,692 (49) |
| Age distribution (yr) | |
| ≤60 | 10,281 (49) |
| >60 | 11,209 (52) |
| Year of diagnosis | |
| 2004–2006 | 3,411 (16) |
| 2007–2009 | 5,280 (25) |
| 2010–2012 | 7,153 (33) |
| 2013–2015 | 5,646 (26) |
| T stage | |
| T1 | 131 (1) |
| T2 | 1,007 (5) |
| T3 | 18,348 (87) |
| T4 | 1,635 (7) |
| N Stage | |
| N0 | 9,827 (47) |
| N1 | 9,539 (45) |
| N2 | 1,611 (8) |
| Grade | |
| Well differentiated | 1,486 (7) |
| Moderately differentiated | 14,652 (68) |
| Poorly differentiated | 2,537 (12) |
| Not recorded | 2,815 (13) |
| Radiation technique | |
| Non-IMRT | 18,359 (85) |
| IMRT | 3,131 (15) |
IMRT, intensity-modulated radiation therapy.