Table 2.
Univariate and multivariable logistic regression analysis of receiving a specific treatment by insurance type.
| Combinations | N (%) | Univariate | P | Multivariable | P |
|---|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | ||||
| Only brain RT | |||||
| Private | 7,929 (22.9) | Reference | Reference | ||
| Medicaid | 3,471 (10.0) | 0.85 (0.78–0.92) | 0.001 | 0.81 (0.74–0.88) | 0.001 |
| Medicare | 21,176 (61.1) | 0.74 (0.70–0.78) | 0.001 | 0.97 (0.91–1.03) | 0.26 |
| Uninsured | 2,067 (6.0) | 0.69(0.62–0.76) | 0.001 | 0.66 (0.59–0.73) | 0.001 |
| Only Other RT | |||||
| Private | 4,837 (21.6) | Reference | Reference | ||
| Medicaid | 2,300 (10.3) | 0.97 (0.869–1.08) | 0.56 | 0.89 (0.79–0.99) | 0.04 |
| Medicare | 13,809 (61.5) | 0.69 (0.65–0.75) | 0.001 | 0.93 (0.85–1.01) | 0.08 |
| Uninsured | 1,492 (6.7) | 0.90 (0.795–1.03) | 0.12 | 0.84 (0.73–0.96) | 0.009 |
| Only chemotherapy | |||||
| Private | 6,027 (25.3) | Reference | Reference | ||
| Medicaid | 2,377 (10.0) | 0.59 (0.54–0.66) | 0.001 | 0.54 (0.48–0.59) | 0.001 |
| Medicare | 13,991 (58.6) | 0.41 (0.38–0.44) | 0.001 | 0.79 (0.73–0.85) | 0.001 |
| Uninsured | 1,465 (6.1) | 0.47 (0.41–0.53) | 0.001 | 0.42 (0.36–0.47) | 0.001 |
| Only surgery of the primary cancer site | |||||
| Private | 34,989 (20.5) | Reference | Reference | ||
| Medicaid | 1,648 (9.7) | 0.51 (0.35–0.75) | 0.007 | 0.45 (0.30–0.69) | 0.002 |
| Medicare | 10,800 (63.4) | 0.54 (0.43–0.67) | 0.001 | 0.86 (0.66–1.12) | 0.25 |
| Uninsured | 1,088 (6.4) | 0.45 (0.28–0.73) | 0.001 | 0.35 (0.20–0.59) | 0.001 |
| Chemotherapy plus brain RT | |||||
| Private | 16,319 (33.7) | Reference | Reference | ||
| Medicaid | 5,288 (10.9) | 0.59 (0.55–0.63) | 0.001 | 0.52 (0.48–0.56) | 0.001 |
| Medicare | 24,035 (49.7) | 0.33 (0.32–0.35) | 0.001 | 0.79 (0.746–0.84) | 0.001 |
| Uninsured | 2,766 (5.7) | 0.41 (0.38–0.45) | 0.001 | 0.36 (0.33–0.39) | 0.001 |
| Chemotherapy plus other RT | |||||
| Private | 7,483 (28.3) | Reference | Reference | ||
| Medicaid | 2,786 (10.5) | 0.592 (0.542–0.647) | 0.001 | 0.505 (0.459–0.556) | 0.001 |
| Medicare | 14.519 (54.91) | 0.305 (0.287–0.323) | 0.001 | 0.712 (0.662–0.766) | 0.001 |
| Uninsured | 1.654 (6.3) | 0.447 (0.400–0.499) | 0.001 | 0.375 (0.333–0.423) | 0.001 |
| Surgery plus brain RT | |||||
| Private | 3,654 (21.0) | Reference | Reference | ||
| Medicaid | 1,688 (9.7) | 0.52 (0.40–0.68) | 0.001 | 0.46 (0.35–0.62) | 0.001 |
| Medicare | 10,933 (62.9) | 0.39 (0.34–0.46) | 0.001 | 0.72 (0.59–0.88) | 0.001 |
| Uninsured | 1,101 (6.3) | 0.35 (0.24–0.50) | 0.001 | 0.32 (0.22–0.47) | 0.001 |
| Surgery plus other RT | |||||
| Private | 3,412 (20.4) | Reference | Reference | ||
| Medicaid | 1,623 (9.7) | 0.35 (0.16–0.74) | 0.006 | 0.29 (0.13–0.67) | 0.003 |
| Medicare | 10,606 (63.5) | 0.21 (0.14–0.33) | 0.001 | 0.41 (0.24–0.71) | 0.001 |
| Uninsured | 1,075 (6.4) | 0.39 (0.17–0.92) | 0.03 | 0.25 (0.09–0.70) | 0.008 |
| Surgery plus chemotherapy | |||||
| Private | 3,518 (20.8) | Reference | Reference | ||
| Medicaid | 1,657 (9.8) | 0.57 (0.40–0.80) | 0.001 | 0.48 (0.33–0.69) | 0.001 |
| Medicare | 10,692 (63.1) | 0.24 (0.19–0.31) | 0.001 | 0.70 (0.52–0.95) | 0.01 |
| Uninsured | 1,087 (6.4) | 0.37 (0.23–0.60) | 0.001 | 0.34 (0.21–0.57) | 0.001 |
| Surgery plus chemotherapy plus brain RT | |||||
| Private | 4,024 (22.6) | Reference | Reference | ||
| Medicaid | 1,741 (9.8) | 0.39 (0.33–0.49) | 0.001 | 0.36 (0.29–0.45) | 0.001 |
| Medicare | 10,949 (61.4) | 0.18 (0.16–0.201) | 0.001 | 0.53 (0.45–0.63) | 0.001 |
| Uninsured | 1,123 (6.3) | 0.26 (0.19–0.34) | 0.001 | 0.23 (0.17–0.31) | 0.001 |
| Surgery plus chemotherapy plus other RT | |||||
| Private | 4,837 (21.6) | Reference | Reference | ||
| Medicaid | 2,300 (10.3) | 0.54 (0.37–0.78) | 0.001 | 0.39 (0.25–0.59) | 0.001 |
| Medicare | 13,809 (61.5) | 0.14 (0.10–0.19) | 0.001 | 0.48 (0.33–0.69) | 0.001 |
| Uninsured | 1,492 (6.7) | 0.32 (0.19–0.56) | 0.001 | 0.27 (0.15–0.47) | 0.001 |