Table 2.
Multivariate Regression Analysis for Receipt of Lymphadenectomy
| Patient Characteristics | OR | 95% CI | p-value | |
|---|---|---|---|---|
| Age | <0.001 | |||
| <50 | Ref | Ref | Ref | Ref |
| 51–60 | 1.15 | 0.78 | 1.71 | 0.470 |
| 61–70 | 0.99 | 0.65 | 1.51 | 0.972 |
| 71+ | 0.43 | 0.29 | 0.65 | <0.001 |
| Race | 0.076 | |||
| White | Ref | Ref | Ref | Ref |
| Black | 0.93 | 0.65 | 1.32 | 0.687 |
| Unknown/Other | 0.59 | 0.37 | 0.94 | 0.025 |
| Hispanic | 0.962 | |||
| No | Ref | Ref | Ref | Ref |
| Yes | 1.05 | 0.74 | 1.50 | 0.788 |
| Unknown | 1.02 | 0.63 | 1.64 | 0.940 |
| Charlson-Denyo Score | 0.091 | |||
| 0 | Ref | Ref | Ref | Ref |
| 1 | 0.97 | 0.79 | 1.19 | 0.765 |
| 2 | 0.64 | 0.42 | 0.98 | 0.040 |
| Insurance Status | 0.818 | |||
| Private Insurance | Ref | Ref | Ref | Ref |
| Not Insured | 0.91 | 0.61 | 1.36 | 0.657 |
| Medicaid | 0.78 | 0.51 | 1.19 | 0.246 |
| Medicare | 0.93 | 0.69 | 1.25 | 0.645 |
| Other Government | 0.94 | 0.43 | 2.05 | 0.876 |
| Unknown | 1.26 | 0.64 | 2.48 | 0.512 |
| Median Income | 0.655 | |||
| < 30,000 | Ref | Ref | Ref | Ref |
| 30,000 – 34,999 | 1.15 | 0.83 | 1.59 | 0.414 |
| 35,000 – 45,999 | 1.19 | 0.85 | 1.66 | 0.318 |
| 46,000 + | 1.31 | 0.85 | 2.03 | 0.218 |
| High School Graduate | 0.474 | |||
| 29% or more | Ref | Ref | Ref | Ref |
| 20% – 28.9% | 0.87 | 0.63 | 1.21 | 0.411 |
| 14% – 19.9% | 1.05 | 0.74 | 1.49 | 0.795 |
| <14% | 0.84 | 0.52 | 1.36 | 0.483 |
| Demographic Location | 0.489 | |||
| Rural | Ref | Ref | Ref | Ref |
| Large Metropolitan | 1.10 | 0.68 | 1.78 | 0.689 |
| Small Metropolitan | 0.98 | 0.64 | 1.51 | 0.939 |
| Suburban | 1.07 | 0.64 | 1.79 | 0.784 |
| Unknown | 0.56 | 0.21 | 1.49 | 0.249 |
| Facility Type | <0.001 | |||
| Community Cancer | Ref | Ref | Ref | Ref |
| Comprehensive Community | 1.23 | 0.75 | 2.02 | 0.403 |
| Academic/Research | 4.04 | 2.53 | 6.45 | <0.001 |
| Integrated Cancer Network | 1.75 | 0.93 | 3.27 | 0.082 |
| Facility Location | 0.384 | |||
| New England | Ref | Ref | Ref | Ref |
| Mid Atlantic | 1.19 | 0.68 | 2.10 | 0.538 |
| South Atlantic | 1.58 | 0.90 | 2.77 | 0.110 |
| East North Central | 1.14 | 0.63 | 2.08 | 0.671 |
| East South Central | 2.21 | 1.10 | 4.43 | 0.025 |
| West North Central | 1.16 | 0.57 | 2.35 | 0.684 |
| West South Central | 1.38 | 0.72 | 2.65 | 0.329 |
| Mountain | 1.23 | 0.54 | 2.79 | 0.623 |
| Pacific | 1.63 | 0.90 | 2.97 | 0.107 |
| Pathological T-Stage | 0.005 | |||
| T2 | Ref | Ref | Ref | Ref |
| T1b | 0.41 | 0.24 | 0.71 | 0.002 |
| T3 | 0.93 | 0.75 | 1.15 | 0.500 |
| T4 | 0.65 | 0.33 | 1.28 | 0.211 |
| Tumor Grade | 0.421 | |||
| 1 & 2 | Ref | Ref | Ref | Ref |
| 3 & 4 | 1.11 | 0.87 | 1.40 | 0.399 |
| Unknown | 0.79 | 0.48 | 1.31 | 0.363 |
| Clinical N-Stage | <0.001 | |||
| N0 | Ref | Ref | Ref | Ref |
| N1 | 5.59 | 3.71 | 8.42 | <0.001 |
| Year of Diagnosis | 0.002 | |||
| Trend from 2004–2014 | 1.06 | 1.02 | 1.11 | 0.001 |