Table 2:
Univariable and Multivariable analysis of factors predicting PC use
| Characteristics | Univariate | Multivariable | ||
|---|---|---|---|---|
| OR (95% CI) | p-value | OR (95% CI) | p-value | |
| Age | ||||
| Per year | 0.999 [0.997, 1.001] | 0.16 | 0.999 [0.996, 1.002] | 0.52 |
| Sex | ||||
| Male | Ref | Ref | ||
| Female | 1.01 [0.96, 1.06] | 0.77 | 1.06 [0.996, 1.12] | 0.07 |
| Charlson-Deyo score | ||||
| 0 | Ref | Ref | ||
| 1 | 1.02 [0.96, 1.08] | 0.59 | 1.08 [1.01, 1.15] | 0.03 |
| 2+ | 1.09 [0.99, 1.19] | 0.06 | 1.16 [1.05, 1.28] | <0.01 |
| Race | ||||
| White | Ref | Ref | ||
| Black | 0.87 [0.8, 0.94] | <0.01 | 0.91 [0.82, 1.002] | 0.06 |
| Others | 0.9 [0.78, 1.04] | 0.16 | 1.12 [0.96, 1.32] | 0.16 |
| Unknown | 0.75 [0.57, 0.97] | 0.03 | 0.83 [0.62, 1.11] | 0.20 |
| Insurance status | ||||
| Private | Ref | Ref | ||
| Uninsured | 1.07 [0.95, 1.2] | 0.25 | 1.19 [1.05, 1.36] | <0.01 |
| Medicaid | 1.16 [1.05, 1.27] | <0.01 | 1.18 [1.06, 1.31] | <0.01 |
| Medicare | 1.05 [0.99, 1.11] | 0.09 | 1.09 [1.01, 1.17] | 0.02 |
| Other Government | 1.48 [1.22, 1.79] | <0. 01 | 1.36 [1.09, 1.69] | <0.01 |
| Unknown | 0.75 [0.61, 0.92] | <0.01 | 0.78 [0.62, 0.97] | 0.03 |
| Facility type | ||||
| Academic/Research program | Ref | Ref | ||
| Community cancer program | 1.06 [0.97, 1.16] | 0.19 | 1.03 [0.94, 1.14] | 0.49 |
| Comprehensive community cancer program | 1.1 [1.04, 1.16] | <0.01 | 1.11 [1.05, 1.19] | <0.01 |
| Integrated network | 1.09 [1.001, 1.19] | 0.05 | 1.13 [1.02, 1.25] | 0.02 |
| Facility location | ||||
| South Atlantic | Ref | Ref | ||
| New England | 1.56 [1.39, 1.75] | <0. 01 | 1.57 [1.38, 1.79] | <0.01 |
| Middle Atlantic | 1.17 [1.08, 1.27] | <0. 01 | 1.3 [1.18, 1.43] | <0.01 |
| East North Central | 1.33 [1.23, 1.44] | <0. 01 | 1.32 [1.21, 1.44] | <0.01 |
| East South Central | 1.07 [0.96, 1.19] | 0.25 | 1.03 [0.91, 1.16] | 0.66 |
| West North Central | 1.23 [1.12, 1.36] | <0. 01 | 1.16 [1.04, 1.3] | <0.01 |
| West South Central | 0.75 [0.68, 0.83] | <0.01 | 0.78 [0.69, 0.87] | <0.01 |
| Mountain | 0.95 [0.83, 1.08] | 0.43 | 0.89 [0.77, 1.02] | 0.10 |
| Pacific | 0.59 [0.53, 0.65] | <0.01 | 0.55 [0.49, 0.62] | <0.01 |
| Income | ||||
| <$38,000 | Ref | Ref | ||
| $38,000-$47,999 | 1.08 [1.001, 1.16] | 0.05 | 0.94 [0.86, 1.02] | 0.16 |
| $48,000-$62,999 | 1.03 [0.96, 1.11] | 0.46 | 0.85 [0.77, 0.94] | <0.01 |
| >$63,000 | 0.95 [0.88, 1.03] | 0.20 | 0.76 [0.68, 0.85] | <0.01 |
| Education (% no high school degree) | ||||
| ≥ 21% | Ref | Ref | ||
| 13-20% | 1.19 [1.11, 1.29] | <0.01 | 1.12 [1.03, 1.23] | <0.01 |
| 7-12.9% | 1.23 [1.14, 1.33] | <0.01 | 1.17 [1.06, 1.29] | <0.01 |
| <7% | 1.2 [1.11, 1.3] | <0.01 | 1.26 [1.12, 1.42] | <0.01 |
| Distance to Facility | ||||
| ≤ 4.7 miles | Ref | Ref | ||
| 4.8 – 11.2 miles | 0.99 [0.93, 1.06] | 0.86 | 1.02 [0.95, 1.1] | 0.55 |
| 11.3 – 29.5 miles | 1.06 [0.99, 1.13] | 0.10 | 1.06 [0.98, 1.15] | 0.13 |
| > 29.5 miles | 0.88 [0.82, 0.94] | <0. 01 | 0.95 [0.88, 1.04] | 0.26 |
| Histology | ||||
| Clear cell | Ref | Ref | ||
| Non-clear Cell | 0.86 [0.78, 0.95] | <0.01 | 1.11 [0.99, 1.24] | 0.08 |
| Sarcomatoid | 1.02 [0.92, 1.13] | 0.66 | 1.17 [1.04, 1.31] | <0.01 |
| Year of Diagnosis | ||||
| 2004-2007 | Ref | - | Ref | - |
| 2008 - 2010 | 0.997 [0.93, 1.07] | 0.92 | 1.06 [0.98, 1.14] | 0.15 |
| 2011 - 2014 | 1.13 [1.06, 1.2] | <0.01 | 1.21 [1.13, 1.3] | <0.01 |
| Clinical trial participation | ||||
| No | Ref | Ref | ||
| Yes | 0.51 [0.29, 0.91] | 0.02 | 0.76 [0.41, 1.4] | 0.379 |
| Treatments | ||||
| None | Ref | Ref | ||
| Surgery | 0.45 [0.39, 0.51] | <0.01 | 0.46 [0.4, 0.53] | <0.01 |
| Radiation | 6.64 [6.06, 7.27] | <0.01 | 7 [6.36, 7.7] | <0.01 |
| Systemic therapy | 1.24 [1.14, 1.36] | <0.01 | 1.25 [1.14, 1.38] | <0.01 |
| Surgery + Radiation | 3.82 [3.37, 4.34] | <0.01 | 4 [3.5, 4.57] | <0.01 |
| Surgery + Systemic | 0.73 [0.65, 0.81] | <0.01 | 0.75 [0.66, 0.84] | <0.01 |
| Radiation + Systemic | 6.2 [5.69, 6.75] | <0.01 | 6.36 [5.8, 6.97] | <0.01 |
| Surgery + Radiation + Systemic | 4.6 [4.14, 5.11] | <0.01 | 4.87 [4.34, 5.45] | <0.01 |
| Unknown | 0.96 [0.78, 1.19] | 0.72 | 0.97 [0.78, 1.21] | 0.81 |