TABLE 2C.
Comparison of patients who did and did not experience delays from surgery to radiation
| Delay from surgery to radiation (n = 3223) | No delay from surgery to radiation (n = 211) | P | |
|---|---|---|---|
| Age, y | .0026 | ||
| <50 | 824 | 43 | |
| 50 to 64 | 1632 | 102 | |
| 65 to 74 | 646 | 48 | |
| 75+ | 121 | 18 | |
| Age, y | .014 | ||
| <65 | 2456 | 145 | |
| 65+ | 767 | 2456 | |
| Ethnicity | .5114 | ||
| Caucasian | 2920 | 192 | |
| African-American | 271 | 16 | |
| Other/unknown | 32 | 3 | |
| Year of treatment | .0001 | ||
| 2010 to 2013 | 1855 | 150 | |
| 2014 to 2016 | 1368 | 61 | |
| Area of residence | <.0001 | ||
| Metro | 1897 | 95 | |
| Nonmetro | 1326 | 116 | |
| Appalachian Status | .0197 | ||
| Appalachia | 820 | 69 | |
| Non-Appalachia | 2403 | 143 | |
| Education level | .0002 | ||
| Low | 1660 | 137 | |
| High | 1563 | 74 | |
| Poverty | .0006 | ||
| Low | 849 | 34 | |
| Moderate | 780 | 49 | |
| High | 772 | 51 | |
| Very high | 822 | 77 | |
| Insurance status | .0108 | ||
| Not insured | 59 | 5 | |
| Private | 1908 | 99 | |
| Medicare | 873 | 76 | |
| Medicaid | 331 | 24 | |
| Other public | 40 | 5 | |
| Unknown | 12 | 2 | |
| Treatment at academic hospital | .1422 | ||
| No | 2771 | 189 | |
| Yes | 452 | 22 | |
| Tumor size | <.0001 | ||
| <3.0 cm | 2324 | 166 | |
| 3.0 to 5.9 cm | 858 | 34 | |
| ≥6.0 cm | 41 | 11 | |
| Nodes examined | <.0001 | ||
| 0 | 101 | 18 | |
| 1 to 11 | 2255 | 159 | |
| 12+ | 848 | 27 | |
| Unknown | 19 | 7 | |
| Nodes positive | <.0001 | ||
| 0 | 1473 | 127 | |
| 1 to 11 | 1485 | 53 | |
| 12+ | 150 | 8 | |
| Unknown | 115 | 23 | |
| Tumor grade | <.0001 | ||
| Well-differentiated | 314 | 30 | |
| Moderately differentiated | 1257 | 82 | |
| Poorly differentiated | 1607 | 84 | |
| Undifferentiated | 6 | 0 | |
| Unknown | 39 | 15 | |
| Hormone receptor positive | .0719 | ||
| Negative | 872 | 49 | |
| Positive | 2321 | 157 | |
| Unknown | 30 | 5 | |
| HER2 positive | .5215 | ||
| Negative | 1577 | 94 | |
| Positive | 372 | 30 | |
| Borderline | 475 | 34 | |
| Unknown | 799 | 53 | |
| Stage | <.0001 | ||
| 0 | 8 | 6 | |
| I | 1011 | 102 | |
| II | 1388 | 63 | |
| III | 773 | 20 | |
| IV | 20 | 15 | |
| Unknown | 23 | 5 | |
| Type of surgery | .0093 | ||
| Lumpectomy | 2098 | 159 | |
| Mastectomy | 1122 | 52 | |
| NOS | 3 | 0 | |
| Reconstruction (Y) | .0479 | ||
| No | 2964 | 202 | |
| Yes | 259 | 9 | |
Abbreviation: HER2, human epidermal growth factor receptor 2; NOS, not otherwise specified.