Table 1.
—Characteristics of the Sample by Treatment Group
| Characteristic | No Local Treatment | Surgery | EBRT | IMRT | SBRT/Proton Therapy |
| No. patients | 2,320 (17.2) | 9,251 (68.7) | 1,653 (12.3) | 108 (0.8) | 126 (0.9) |
| Age | |||||
| 67-69 y | 271 (13.0) | 1,616 (77.4) | 172 (8.2) | 15 (0.7) | 14 (0.7) |
| 70-74 y | 543 (13.2) | 3,138 (76.5) | 368 (9.0) | 30 (0.7) | 24 (0.6) |
| 75-79 y | 635 (16.2) | 2,750 (70.4) | 462 (11.8) | 33 (0.8) | 28 (0.7) |
| 80-84 y | 507 (22.0) | 1,356 (58.7) | 393 (17.0) | …a | …a |
| 85-94 y | 364 (34.7) | 391 (37.2) | 258 (24.6) | …a | …a |
| Sex | |||||
| Male | 1,234 (19.4) | 4,238 (66.8) | 781 (12.3) | 50 (0.8) | 44 (0.7) |
| Female | 1,086 (15.3) | 5,013 (70.5) | 872 (12.3) | 58 (0.8) | 82 (1.2) |
| Race | |||||
| White | 1,954 (16.2) | 8,407 (69.6) | 1,511 (12.5) | 93 (0.8) | 115 (1.0) |
| Black | 255 (32.5) | 416 (53.1) | (11-12)a | …a | …a |
| Other | 111 (18.7) | 428 (72.1) | (7-9)a | …a | …a |
| Income | |||||
| < $33,000 | 666 (22.2) | 1,849 (61.6) | 428 (14.3) | 34 (1.1) | 23 (0.8) |
| $33,000-$40,000 | 377 (18.9) | 1,313 (65.9) | 272 (13.6) | 11 (0.6) | 20 (1.0) |
| $40,000-$50,000 | 480 (16.6) | 1,984 (68.7) | 365 (12.6) | 28 (1.0) | 33 (1.1) |
| $50,000-$63,000 | 407 (15.7) | 1,826 (70.4) | 320 (12.3) | 19 (0.7) | 23 (0.9) |
| > $63,000b | 390 (13.1) | 2,279 (76.5) | 268 (9.0) | 16 (0.5) | 27 (0.9) |
| Marital status | |||||
| Married | 1,018 (14.4) | 5,198 (73.6) | 757 (10.7) | 39 (0.6) | 51 (0.7) |
| Not married | 1,221 (20.5) | 3,764 (63.2) | (13-15)a | …a | …a |
| Unknown | 81 (18.3) | 289 (65.4) | (13-15)a | …a | …a |
| Residence | |||||
| Urban | 1,921 (17.0) | 7,797 (69.1) | 1,365 (12.1) | 92 (0.8) | 111 (1.0) |
| Rural | 111 (17.9) | 428 (69.1) | (10-13)a | …a | …a |
| Other | 288 (18.5) | 1,026 (66.1) | (12-14)a | …a | …a |
| Comorbidities | |||||
| 0 | 770 (17.6) | 3,263 (74.4) | 314 (7.2) | 13 (0.3) | 26 (0.6) |
| 1-2 | 844 (14.5) | 4,168 (71.6) | 696 (11.9) | 58 (1.0) | 59 (1.0) |
| ≥ 3 | 706 (21.7) | 1,820 (56.1) | 643 (19.8) | 37 (1.1) | 41 (1.3) |
| Tumor size | |||||
| T1a | 658 (13.8) | 3,620 (76.1) | 398 (8.4) | 31 (0.7) | 50 (1.1) |
| T1b | 796 (17.7) | 3,031 (67.3) | 591 (13.1) | 37 (0.8) | 52 (1.2) |
| T2a | 866 (20.6) | 2,600 (62.0) | 664 (15.8) | 40 (1.0) | 24 (0.6) |
| Histology | |||||
| Adenocarcinoma | 654 (12.0) | 4,224 (77.8) | 470 (8.7) | 29 (0.5) | 52 (1.0) |
| Bronchioloalveolar carcinoma | 115 (7.8) | 1,312 (89.1) | (1-3)a | …a | …a |
| Squamous cell | 627 (15.4) | 2,821 (69.2) | 568 (13.9) | 33 (0.8) | 29 (0.7) |
| Large cell | 72 (13.5) | 381 (71.6) | (12-15)a | …a | …a |
| Other | 852 (43.8) | 513 (26.4) | 507 (26.1) | 37 (1.9) | 37 (1.9) |
| Chemotherapy | |||||
| No | 2,095 (17.5) | 8,505 (70.9) | 1,190 (9.9) | …a | …a |
| Yes | 225 (15.4) | 746 (51.0) | 463 (31.7) | …a | …a |
| Invasive mediastinal staging | |||||
| No | 2,230 (17.8) | 8,540 (68.1) | 1,555 (12.4) | …a | …a |
| Yes | 90 (9.8) | 711 (77.7) | 98 (10.7) | …a | …a |
| Influenza vaccine | |||||
| No | 1,214 (23.1) | 3,393 (64.7) | 567 (10.8) | 37 (0.7) | 34 (0.6) |
| Yes | 1,106 (13.5) | 5,858 (71.3) | 1,086 (13.2) | 71 (0.9) | 92 (1.1) |
| COPD admission | |||||
| No | 2,201 (16.8) | 9,095 (69.6) | 1,551 (11.9) | …a | …a |
| Yes | 119 (30.2) | 156 (39.6) | 102 (25.9) | …a | …a |
Data are presented as No. (%), unless otherwise indicated. EBRT = external beam radiation therapy; IMRT = intensity-modulated radiation therapy; SBRT = stereotactic body radiation therapy.
a
Number not reported because of the Centers for Medicare & Medicaid Services prohibition against the publication of cell sizes < 11 beneficiaries. In some cases, a range is provided for the percent value.
b
Highest income category for no treatment and surgery also includes < 11 patients with unknown income.