Table 2. Univariable and multivariable logistic regression for chemo usage.
OR: odds ratio, CI: confidence interval
| Table 2. Univariable and multivariable logistic regression for chemo usage | ||||
| Univariable | Multivariable | |||
| OR (95% CI) | p-value | OR (95% CI) | p-value | |
| Age | ||||
| <65 | 1 | 1 | ||
| ≥65 | 0.48 (0.32-0.71) | <0.001 | 0.54 (0.34-0.86) | 0.009 |
| Race | ||||
| White | 1 | 1 | ||
| Black | 1.61 (1.01-2.57) | 0.047 | 1.39 (0.80-2.41) | 0.244 |
| Other | 1.04 (0.34-3.18) | 0.946 | 0.90 (0.24-3.38) | 0.877 |
| Charlson-Deyo | ||||
| 0 | 1 | 1 | ||
| 1 | 0.55 (0.32-0.94) | 0.029 | 0.60 (0.32-1.10) | 0.095 |
| ≥2 | 0.48 (0.19-1.25) | 0.132 | 0.58 (0.32-1.10) | 0.324 |
| Palliative Surgery | ||||
| No | 1 | 1 | ||
| Yes | 0.67 (0.45-1.01) | 0.053 | 0.71 (0.45-1.12) | 0.142 |
| Palliative Radiation Therapy | ||||
| No | 1 | - | - | |
| Yes | 0.95 (0.62-1.44) | 0.799 | - | - |
| Hormonal Therapy | ||||
| No | 1 | 1 | ||
| Yes | 0.35 (0.16-0.79) | 0.011 | 0.35 (0.15-0.85) | 0.021 |
| Facility type | ||||
| Non-academic | 1 | 1 | ||
| Academic | 3.23 (2.10-4.96) | <0.001 | 3.14 (1.95-5.03) | <0.001 |
| Region | ||||
| Northeast | 1 | 1 | ||
| Midwest | 0.81 (0.45-1.47) | 0.495 | 1.08 (0.55-2.10) | 0.829 |
| South | 0.92 (0.53-1.60) | 0.775 | 1.25 (0.66-2.35) | 0.494 |
| West | 0.49 (0.24-1.00) | 0.048 | 0.59 (0.26-1.32) | 0.198 |
| Insurance | ||||
| Not insured | 1 | - | - | |
| Private insurance | 0.73 (0.23-2.26) | 0.581 | - | - |
| Medicaid | 1.27 (0.37-4.33) | 0.705 | - | - |
| Medicare | 0.53 (0.17-1.64) | 0.270 | - | - |
| Other/unknown | 1.40 (0.28-7.02) | 0.682 | - | - |
| Income | ||||
| < $38,000 | 1 | - | - | |
| $38,000-$47,999 | 0.98 (0.52-1.82) | 0.940 | - | - |
| $48,000-$62,999 | 0.82 (0.44-1.53) | 0.528 | - | - |
| ≥$63,000 | 0.77 (0.43-1.41) | 0.402 | - | - |
| Year of diagnosis | ||||
| 2004-2007 | 1 | - | - | |
| 2008-2011 | 0.86 (0.49-1.49) | 0.588 | - | - |
| 2012-2015 | 1.15 (0.69-1.94) | 0.595 | - | - |