Table 1. Patient and Tumor Characteristics*.
| BMI < 18.5 kg/m2 N = 21 |
BMI 18.5- 24.9 kg/m2 N = 120 |
BMI > 24.9 kg/m2 N = 263 |
p-value | |
|---|---|---|---|---|
| Age (years) | 53.5 | 50.5 | 52.3 | 0.41 |
| Race | ||||
| White | 16 (76.2%) | 81 (67.5%) | 152 (57.8%) | 0.07 |
| Black | 5 (23.8%) | 37 (30.8%) | 102 (38.8%) | |
| Other/Missing | 0 (%) | 2 (1.7%) | 9 (3.4%) | |
| Smoker | ||||
| Yes | 16 (76.2%) | 65 (54.2%) | 104(39.6%) | <0.01 |
| No | 2 (9.5%) | 39 (32.5%) | 126 (47.9%) | |
| Previous | 2 (9.5%) | 9(7.5%) | 18 (6.8%) | |
| No data | 1 (4.8%) | 7(5.8%) | 15 (5.7%) | |
| Co-morbidities | ||||
| None | 11 (52.4%) | 65 (54.2%) | 95 (36.1%) | <0.01 |
| ≥ 1 | 10 (47.6%) | 54 (45%) | 162 (61.6%) | |
| No data | 0 (0%) | 1 (0.8%) | 6 (2.3%) | |
| Histology | ||||
| Squamous | 17 (81%) | 101 (84.2%) | 226 (85.9%) | 0.68 |
| Other | 4 (19%) | 17 (14.2%) | 33(12.5%) | |
| No Data | 0 (0%) | 2 (1.7%) | 4 (1.6%) | |
| Stage | ||||
| I-II | 12 (57.1%) | 73(60.8%) | 195 (74.1%) | 0.01 |
| III-IV | 9 (42.9%) | 46 (38.4%) | 65 (24.7%) | |
| No data | 0 (0%) | 1 (0.8%) | 3 (1.2%) | |
| Grade | ||||
| 1 | 0 (0%) | 4 (3.4%) | 10 (3.8%) | 0.75 |
| 2 | 12 (57.1%) | 66 (55%) | 129 (49%) | |
| 3 | 7 (33.4%) | 43 (35.8%) | 100 (38%) | |
| No data | 2 (9.5%) | 7 (5.8%) | 24 (9.2%) | |
| LN status | ||||
| Positive | 8 (38.1%) | 33 (27.5%) | 75 (28.5%) | 0.61 |
| Negative | 13 (61.9%) | 87 (72.5%) | 188 (71.5%) | |
| IMRT | ||||
| Yes | 3 (14.3%) | 34 (28.3%) | 83 (31.6%) | 0.24 |
| No | 18 (85.7%) | 86 (71.7%) | 176 (66.9%) | |
| Unknown | 0 (0%) | 0 (0%) | 4 (1.5%) |
*
Percentages represent proportion of column total. IMRT: intensity modulated radiation therapy.