Table 4.
Unadjusted and Adjusted Regional Variations in the Rate of Radiotherapy Usage Between White and Black Patients With Breast Cancer
| Unadjusted | Adjusted* | ||||||
|---|---|---|---|---|---|---|---|
| Region | States | % Whites | % Blacks | P | % Whites | % Blacks | P |
| West, Pacific West | AK, CA, HI, OR, WA | 72 | 54 | <.001 | 74 | 61 | .07 |
| West, Mountain West | AZ, CO, ID, MT, NV, NM, UT, WY |
77 | 78 | .88 | 72 | 67 | .59 |
| Midwest, West North Central | IA, KS, MN, MO, NE, ND, SD |
74 | 73 | .94 | 74 | 70 | .67 |
| Midwest, East North Central | IL, IN, MI, OH, WI | 76 | 72 | .04 | 79 | 73 | .15 |
| Northeast, New England | CT, MA, NH, ME, RI, VT | 72 | 69 | .53 | 78 | 71 | <.001 |
| Northeast, Mid-Atlantic | NJ, NY, PA | 71 | 57 | <.001 | 70 | 62 | .01 |
| South, South Atlantic | DE, DC, FL, GA, MD, NC, SC, VA, WV |
76 | 68 | <.001 | 73 | 64 | .009 |
| South, West South Central | AR, LA, OK, TX | 74 | 63 | .001 | 69 | 59 | <.001 |
| South, East South Central | AL, KY, MS, TN | 72 | 57 | <.001 | 78 | 60 | .001 |
*
Adjusted for all covariates except state/region.